Once you've registered your vehicle, the appropriate office, Housing Facilities Office or Student Records and Registration, will designate you a parking lot.
On-campus upper classpeople (having many credits) will get lot 10 and upper 17 (less walking), where if you are a first year, living in the dorms, you get to park in lot 21.
Off-campus students park in either lot 9 (first come, first serve) or in lot 26. refer to map
You can always park at the metered parking. Note the tickets for the metered parking is $10, and parking in the incorrect lot is $20. (information correct as of March 2007 - contact Public Safety for current rates )
...other wording about parking can be seen in Tech Guide and the Student Handbook...