Standard 300W PSU is fully compatible. You have IDE drive, no SATA connector needed, IDE CD-RW drive, standard ATX motherboard connector, probably a floppy drive. Follow the link - it will do the job fine. Alot of PB's go down with faulty PSU, very common fault.
http://www.ebuyer.com/product/109466/show_product_reviews
Scott H, October 2007