I just bought a Bell ExpressVu 5100 receiver (aka Dish Network 501) and I was wondering if I can pop in a larger hard drive for larger recording capacity. Currently, I can get roughly 35 hours of recording and there's a Maxtor hard drive in the unit.

I'm not sure the size of the existing unit but it would be nice if I can replace it with let say a 80GB for more recording hours.

Also, at the back of the unit, there's a Expansion Slot, do you know what that's for?

Thanks