This looks old enough to need the usual work over, new PSU, HDD and such.
How long have you been repairing PCs?
PS. Read http://forums.cnet.com/7723-6122_102-569818/getting-ready-to/?messageId=5345121#message5345121
2gb of memory
The computer turns on on the BIOS, has an underscore flashing, then inexplicably turns off.