Most HTIB's I've seen, those are still two "seperate" units. Basically you want a receiver and a CD/DVD player under $150.
http://www.crutchfield.com/S-7av8bMH...0&I=257RX6040B
That's about the cheapest thing I know of. Slap any DVD/CD player you feel with that and I guess you're set to go.
If you didn't have the speakers, I'd say the Onkyo 767 on clearance somewhere or even the new 777 set would set you well over the top.