i have one concern for your idea. i have an aging dell dimension 4600 (circa 2004). i had originally planned to build a new extreme low-budget system using the same case, but i had to give up on that idea when i found out that dell used a proprietary front panel connector. i can't say for sure if they still do this, but look into that. the motherboard might fit in the case, but if you can't even turn the computer on, there's really no point.