If that's your only choice then maybe someone else can point you in the right direction. I sincerely hope that if you'd like the paint to stay on your car and stay unblemished that you will not resort to covering it. The wind will move the cover around and destroy your paint. Wax does a far better job than a car cover.
Now that being said, if you have room to put it, here's what I did. I bought a 10X20 covered canopy(metal poles) from walmart for $73. Then I went to Kmart.com and bought a sides kit for $105 with a big zip up door in the front. Total investment $178 compare that to the price of a car cover. I have it in the in-laws yard! Here's a pic of what I have.....
(store pic, not my car)
