I cant believe it I cross threaded it. Hopw can I fix this quick. It is only one but I need it. How can u replace that thing?

if you are talking about the wheel stud, do this:

1. jack up car and take off wheels
2. unbolt caliper from mounting bracket
3. unbolt the mounting bracket
4. slide rotor off, yes it slides off. just use a little force
5. hammer out the stripped, damage, or broken stud (hammer hard)
6. aply some i think grease or peutrolium jelly onto new stud
7. hammer back in place and tighten lug nut onto it to pull it in place
8. slide rotor back on
9. bolt on mounting bracket
10. bolt on caliper
11. put wheel back on and tighten lugs
12. lower car
13. give me a point :thumbsup
14. if you got this far, then you read too much!!!

hope that helps you out.
later