ok. Well, that case has a opening large enough where you could install probably most PSU's. You just need to determine if your Motherboard is 20pin or 24pin.
IF that MOBO PCI express or AGP? If it's PCI express it's 24pin. If it's AGP it's most likely 20pin. Just open your case and pull out the power connector for the MOBO. Count how many pins it has. It will either be 2 rows of 10 pins or 2 rows of 12pins.
Then you can buy the correct PSU. PCP&C is the best, but you won't have to go with them.