In response to the original poster, going to church isn't going to change you. Church can be nice, but just going to church isn't going to make you a different person anymore than sitting in a garage is going to make you a car. Now the relationships you start there, the message that you hear, and most importantly the God you come to know, those will change you if you let them. I'd say church doesn't give me a sense of joy or peace, but I have actual joy and peace because of my understanding and acceptance of Christ's supremacy in the whole world, and His love for me in His role as my Lord and Savior. Does that make any sense?
Scripture says you are transformed by the renewing of your mind (Romans 12:2). You hear the truth in the world of God, then you choose either to let it change how you see and respond to God and others and eveything else in the world, or you don't. If you don't change your worldview you'll never change your attitude and actions, and if you don't change those... well you'll never get a different result from doing the same things. And this is where most people get tripped up, they don't want to be honest about whats going on in their heart, they don't want to submit to what God says, they don't want to accept the challenge to live to a different standard and so they go to church and it becomes just another source of problems.
My advice on picking a church, you want two things. First of all you want a church that is God-centered, this may sound weird at first, but if you look at the real message that people speak, you'll find there are a lot of churches that are really man-centered in their mindset. They talk about God, but when it comes to who they are looking to please it's always themself, when it comes to who is serving who it's about God serving them, when it comes to our attitude and plan of action it's always man and in most things they do they are really only glorifying man. You definitely don't want that, you want a church that seeks, preaches, and serves the Lord, otherwise why even go? A paticular enjoyment in the gospel and all of what Christ came and did is also of interest.
The second thing you want is when it comes to our part, you want an emphasis on love. Love doesn't just pretend everything is ok and tells people what they want. Love looks at the word of God, sees what it says about our hearts and lives, and is honest about being a broken and hurting people each with their share of problems and in need of God, but accepting each one as they are and in love helping each other find God and obey Him. Trust me, you do NOT want to go to a church where everyone is expected to be perfect. The fact is that nobody is perfect and we all have our faults, you want a church that readily admits that so that everyone can be honest and show each other a genuine love, a love that looks past the faults and encourages a person to live up to their potential.
If you are sitting there reading my advice and wondering what kind of a church I go to, you can get somewhat of an idea by checking out some of my pastors sermons here if you want, provided in MP3 format.
http://www.christchurchpca.org/Sermons_2004.htm
He reads from the NIV translation of the bible because thats just the bibles that my church got in bulk to put under the seats for visitors. I personally use NIV, NASB, ESV, NKJV and NLT all for different reasons. Here is a neat site that gives a decent idea of what the different translations are like and what methods were used for translation...
http://www.zondervanbibles.com/translations.htm
And then this is a site that you can actually read the whole bible in many different translations (I use this site all the time)
http://bible.gospelcom.net/cgi-bin/bible/
I don't say this to boast, but just as matter-of-fact. I think I may be the most involved christian on the board in that I was raised in the church, I've been active in ministry for over 5 years and I'm headed to become a missionary. You may think that is a good thing or a bad thing, but I'm just saying it to let you know I'm available and if you have any questions you can send me a PM and maybe we could talk on AIM if you want. I've centered my life around this, so it's no trouble at all. I have a good understanding of christianity not just in general but the many distinctions of belief between different sects and denominations, so I'd be glad to help.
You just have to keep the sabbath holy, the Word doesn't require you to go to a place where people dress pretty to show off and hear how bad they are. Some people just need more guidance, but there's nothing wrong when many people get together to worship, it's just that nowadays, people treat the sabbath like it's a ball and chain. For me, it's a quiet private day between me and him.
How do you say this? All through scripture we have God ordaining specific means of gathering together for corporate worship. In the New Testament we see the Apostles (hand picked and trained to be leaders of the church by Jesus) founding churches, giving instruction on the gathering of the saints, instructions of office and ordainment of ministers, details of the worship service and the whole point of why we gather together in the first place, etc.
Christianity is a relationship with God but it is also a religion with an ecclesiastical structure that God set out. Now the whole realm of possibilities of what it could look like within the guidelines scripture gives us is fairly big, and typical american churches certainly aren't the definitive picture of what it should be, but it's just not true to say all the word says is keep the sabbath holy.