First post here. I bought a 400mhz iMac DV (slot loader) off eBay for $40 for my son to play with. Well after 2 weeks the flyback transfomer died so I went ahead and took the logic board out to do the ATX mod. So now the logic board powers up just fine, and I can get into OS X. My problem is that I am using an external monitor, but the resolutions in OS X only go up to 1024x768 (the original iMac resolution). The picture looks fine, but on a 19" LCD monitor, I would like to have a higher resolution. When I try it with a 15.4" widescreen, the monitor tells me "mode not supported" probably because the refresh rates. I made a custom cable to hook a VGA port to the 20pin video connector on the bottom of the logic board. Have any of you been able to get better resolutions in OS X with a slot load iMac logic board? Thanks for your time.