Some of the motherboard standoffs are in different locations for an ATX motherboard, just drill new holes and move the standoffs or cut the old ones off and screw in new ones. Make sure to deburr after cutting the ATX connectors area so you don`t end up slicing your fingers up at some point in the future when you go to add in a different mouse of monitor.
Easy conversion though. I still have both the Gateway full towers I converted. Would have been a real shame to have to dontate those to a landfill somewhere. On of them was a EISA 486DX2/50E originally.
Some fool thief comes into my house someday, will see that Gateway 486DX2/50E nameplate on the front of the one tower, laugh at it, and move on, not realizing what`s really inside it... I removed the covers from both towers and cool them with 20 inch box fans. The covers are well stashed away, and it isn`t likely someone would try to make off with a computer missing its cover (little resale value that way). And the machines run cool, to say the least.
I just had the CPU cooling fan quit turning in one of them, and the CPU was slightly overclocked in it. Judging by the fan not wanting to be turned easily by hand, it must have been that way for the last month or so, but it kept running, and I only got a few crashes, figured it was probably power surges from the power line doing it...
So here I go to install a new KVM switch so I can switch between the two towers and get a tank 19 inch monitor out of the room for use elsewhere and t free up some much needed space, I move the box fan to get at the cables in the back, and here the CPU fan isn`t rotating... Without that box fan, that poor overclocked CPU would have melted down into a pile of silicon goo.
Instead, I`m using it now to type this. now you are really screwed
http://www.infernalpress.com/Columns/election.html http://www.scoop.co.nz/mason/stories/HL0307/S00065.htm