I know, I know, it's been asked 890,784,798 times before, but the only thread I found about it didn't quite answer what I was looking for (and is 4 months old). I want a VGA box with Component input, on which I will plug my PlayStation 2 and my GameCube (one at the time) in the hope of playing games on higher resolution (480p or 480i). Here what I found out...
What do you think? Did I miss something else that could do better than those mentionned above?

Comments: It works exclusively with PS2, and requires a booth disc.PS2 Hi-Resolution VGA Adaptor (USA Version)
Blaze
Play your PS2 games on VGA monitor.
Enclosed hardware allows your PS2 Linux development kit to work on VGA monitor.
Support REAL High-Resolution with supported games.
True 640 x 400 resolution.
Does not use the double scan method.
Compatible with USA versions of the Playstation 2 only
Requires the included CD to load each game.
Description: PlayStation 2 Hi-Resolution VGA Adaptor (USA Version)! The Blaze VGA Adapter actually uses software to UNLOCK the true high resolution of the PS2 console. The PS2 console is capable of running in a resolution of 640 x 400 but the more common 320 x 200 is always used. With his unique VGA adaptor games will come alive with clarity and crisp graphics. Play your PS2 games in stunning high resolution on any VGA monitor. Play your next-generation games the way they were meant to be played, in stunning high resolution.
Source:http://www.gocybershop.ca/customer/product.php?productid=668&cat=47&page=1

Comments: Seems to be the only viable option. Positives comments concerning PS2 uses, but none concerning GameCube...Multi Purpose XGA Box (VGA Box)
Connect any video source to your PC VGA monitor
First VGA box supporting the higher output resolutions for LCD monitors
Works with both, CRT and LCD monitors
Inputs: Video-In (RCA) and S-Video in
Automatic formats: 640x480, 800x600, 1024x768
Double scan conversion, from 15.75KHz to 48.63KHz.
Adaptive non-linear noise reduction
3D motion adaptive de-interlacing
Non-linear programmable 16:9 expansion
Supports PAL and NTSC (works with all consoles worldwide)
Description: Connect your favorite videogame console (or any other video source) to your XGA monitor with the Multi-Purpose XGA Box. The XGA Box accepts video signals from any video source through the standard AV port (RCA IN) and the S-Video port. It also has a pass through port for your VGA cable (VGA in & VGA out), so that you dont need to unplug your PC whenever you are about to use it. This product is recommended for users of LCD monitors, as it supports higher output resolutions.
Source: http://www.lik-sang.com/info.php?category=219&products_id=3235&

Comments: Good comments and bad comments, but with Brightness, Contrast, Saturation and Hue control is interesting.Multi Purpose VGA Box (with Component-In)
Connect any video source to your PC VGA monitor
Works with normal (CRT) and also LCD monitors
Input: AV, S-Video, VGA or Component (YUV)
Output: VGA
Automatic video source mode detection (film/graphics)
Motion-adaptive interfiled de-interlacing
On Screen Display: 50/60Hz frame rate conversion, Brightness, Contrast, Saturation, Hue control, video standard
Double scan conversion (15.75KHz to 31.5KHz for NTSC, 15.625KHz to 31.25KHz for PAL/SEAM)
Supports PAL, NTSC 4.43(50Hz), Combination-PAL N(3.58MHz), NTSC N(3.58MHz) & SECAM
Supports NTSC, PAL 4.43 (60Hz), NTSC 4.43(60Hz), PAL M (3.58MHz), NTSC-JAPAN
50Hz/60Hz auto-detection
50Hz mode resolution: 720 x 576 pixel
60Hz mode resolution: 720 x 480 pixel
Universal Power Supply (100V - 240V) included, works worldwide
Description: Connect your favorite videogame console (or any other video source) to your VGA monitor with the Multi-Purpose VGA Box. The VGA Box accepts video signals from any video source through the standard AV port, the S-Video port, or through the component ports. It also has a pass through port for your VGA cable (VGA in & VGA out), so that you dont need to unplug your PC whenever you are about to use it.
Source: http://www.lik-sang.com/info.php?category=219&products_id=3166&
What do you think? Did I miss something else that could do better than those mentionned above?