I stay at friends quite a lot who has a ancient 700MHZ pc, I cannot upgrade the ram as it takes sticks older than DDR, and even if I could I doubt the mobo can handle it.
I brought a Athlon mobo with me (2400 I think) with 2 gigs of ram and it fits into the case but the PSU hasnt got a connector to go onto motherboard.
There is only 3 molex connectors at the moment, powering 2x dvd roms and 1 hard drive.
At least as a temporary measure could I say get a molex to motherboard adaptor to get it to work.
Not sure wattage but its 240V
Its at least a temp measure till I get a spare psu(as dont want to use the new good ones in pcs I want to sell!)