Sitemap problem - session id or what?

[best_Wish]

I cant make google crawl my other pages exept index one! and when i try to make site map it keep repeating on a page.

[mywebsite.com...]
[mywebsite.com...]
[mywebsite.com...]

but problem is all going to the same page. its a big problem with googlebot thinks its duplicate page!

Any help?