HELP!!! 2000 Accord Transmission Problem!!!

I have a 2000 Accord EX ... I bought it not so long ago, but my transmission is messed up...i'm not exactly sure what the problem is...but, anyway, my question: does any one know or has experienced this problem? if so what price range am i looking at for a reconstructed transmission??? Please let me know any info. Much appreciated.

how many miles are on the vehicle?? Honda extended the warranty...I believe it was all 2000-2002 accords to 10 yrs 100,000 miles. Otherwise I'm not sure on cost, 1500+++ I'd guess with a cheap junkyard tranny that may end up with the same prob in the future. If you are under 100k, check with your local honda dealer.