hello everyone, first post here on this wonderful board. i have an older iMac G3 350mhz processor with a slot loading CD drive. for the past couple months i have been having problems with the screen flickering different colors and contrast. i asked a friend what it may be and he said its probably a video card however i dont know if this is correct as he is a PC guy. How hard is it to make a Do-It-Myself repair considering that i know nothing about computers? however i definately am mechanically inclined. what video card does this model imac come with and what would be a cheap upgrade? i am college student and would like to salvage this computer if possible, it would be hard to afford a new iMac given my budget. your help is much appreciated.