After i started my car today i trie to put it in gear but it would not go. I tried all the other gears and the only one that worked was reverse.. Then i killed the car and tried again. Same thing.
So i started it up again put in reverse movd back some and tried it and all the gears worked again.

Is this a sign of a problem or just a 1 time thing?

Hmm... Every once in a while my car will lock me out of a gear (such as downshifting from third to second). But I can go into other gears. See if this problem persists, and if it does, you may need to replace your transmition mounts. They could be failing, and making the tranny move just a little, and then that changes where the gates are. I'm just guessing here though, I don't really know what could be wrong. Have you changed the fluid in a while, or checked that it is full? If I were you, I would get under there and change the fluid out to Redline MTL.