Originally posted by woodyfly
Im not gonna buy a new case ... what could i do? Could i unscrew the power supply and put it somewhere else? (if the cables allow?)
Yes, of course you can. Changing the case (and power supply) of a computer is easy and harmless.
Be sure to read on the web about the heatsink before you buy it and check the exact dimensions and clearing distances (usually on the manufacturer's website). Then check the case dimensions. Make sure it all fits in.