Ski Rack Suggestions

Alright it's about that time of year and since my old car died this summer I was left with my moms old dodge neon. I want to get a rack for the top (optimal carpooling numbers), but I am aware that there are no bars running across the top. I've heard of magnets and clamps on the door, but what do you think will work out best and/or where can I get a good deal (college budget)?