Wow, you're right the PSU smells burnt, I don't have any other PSUs to use though. My system specs
Q6600 Quad core 2.4ghz CPU
EVGA 8800GT 512mb
2GB DDR2 Corsair RAM
The PSU is just some cheap thing that came with the case, I think it's a 400watt.
Everything else looks like it's in good condition, I don't see any bulges or burst parts on the Motherboard, the PSU definitely smells burnt though.