The head needs to come off of the car to do the valves.

If compression test doesn't pass, Pull the head off while engine is in the car.

Use the yellowpages to find a machine shop near you.

Replace the valves that are bent.

If you need new stock valves, and you want them cheap... go here:

http://www.store.partsdinosaur.com/page29.html

notice:
intake valve: 7.95
exhaust valve: 9.66

This guy is awesome at getting shit shipped out fast.

I believe advance auto has a valve spring compressor to take the valves out(saves you money). the more you do, the less a machne shop should charge you.

Just make sure you don't loose any of the keepers when you compress the valve (there are two keepers on each valve) and it makes sense to use a magnet to catch them when the spring is compressed.

Very Important: Inspect all cylinders and head for metal depris and clean regardless.