Honestly its much easier than you'd think it it is. To allay your fears, order one of these now (delivery may take a while and they're have anyway):
http://www.dealextreme.com/details.dx/sku.20440
Attach it to a metal part of your case while working, and never work on carpet, I'd usually recommend putting the motherboard together outside of the case on the static bag it came in, the chances of damaging it through static damage are so tiny but I know myself its a worry you'll have.
Check out tech report's excellent builder's guide here and sign upto Ebuyer's forums to see the second guide as well:
http://techreport.com/articles.x/13671
http://forums.ebuyer.com/showthread.php?t=19603
and watch a few Youtube videos on the subject as well. Motherboard manuals are excellent these days, really helpful and there's always plenty here on GAF to help out as well. Its a lot easier than you think, I only put together my first rig about 18 months ago, a good tip I found was to take it slow and make sure you have a whole evening set aside.