[jc836]

Sounds like you need to visit an alignment shop. The specs for the rear are +0.3 to -1.8 degrees. Our car came from the factory with nearly identlical settings of ~ -0.7 and that is a pretty good handling setting for daily and HPDE. Something on your car is definitely not quite as it should be. Another thing to check is the TOE-the settings are easy to adjust for this on both ends. Make sure that you do it on a 4-wheel Thrust alignment machine (preferably a LASER).
The squaking up front could be due to a lot of things. Worn bushings, really cold weather is a known issue with certain Honda suspensionparts. You could have a bad shock or even the rubber insert in the top hat may be bad.

From your description you have purchased a used Prelude. You do not give us much to go on as to year or trim level. With that said you also do not mention if the car was lowered or if any bushings were replaced with poly ones. It is OK if you do not know-but please get an alignment. A stock Prelude CANNOT have the Camber adjusted without using kits for that. If you have an SH 5th gen there are kits for it just as there are for a BASE. A 4th gen will use the same kits on either the front or rear-if using anchor bolts. We used kits on both ends of our 5th gen after lowering it. SPC Balljoints up front and Ingalls anchor bolts in the rear-this corrected the Camber back to stock.
If the Camber is really bad-put the car on a frame rack before ordering any replacement parts. This will insure that the chassis is undamaged. It is even possible that the car hit a curb and bent something in the suspension.
Good luck