If you are attending an event at the CPAC, parking is included in the price of your ticket, and it allows you to park in Lot 2A directly in front of the CPAC building. If you are visiting outside of a scheduled event, daily parking permits can be purchased at the kiosk at the front of Lot 2 or 2A.
Lot 2 is most likely your best bet. Parking passes can be purchased near the handicap spaces at each lot on campus.
You do have to pay for parking, although I don't remember it being very much. There are automated parking kiosks near the front of the main lot.
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