It's a pretty kickass Analog system, so somewhat dated, but still good.
What make/model TV do you have..be nice to hook that to it.
As for speakers, the more the merrier. The system can do 5.1 (five speakers and a sub).
You'd want two main speakers at the very least.
Even though it doesn't have digital surround sound it does have a 5.1 channel input. You could connect that to a desktop with 5.1 analog audio outputs and use the digital surround processing in the PC.