Problem in session variable in ASP.Net

[Pankaj]

Hi,

I am facing a problem in accessing ASP.NET pages.
I developed a application in ASP.NET 2003 that when calls open a
sign-
in page
by verifying userid in oracle database and open a main menu.


Everything is Working find when i installed my applcation on
Windows2000.
But when i installed my application on Windows XP and try to call
signon page
using "http://CDDD-01/V-DIRECTORY/WEB//MAIN/Default.aspx" it was
call
the page
and when i tried to login it simply refreshed and nothing will
happenn.
When i tried to login thru :-
"http://LOCALHOST/V-DIRECTORY/WEB//MAIN/Default.aspx"


It opens the page and shows me the main menu..but when i tried to
click main menu
to open other page it says SESSION expire.


Can you please tell me if i have set any permission or do some other
steps?


I already set the permission IUSR_ and ASPNET and IVAM on oracle
folder.


Regards
Pankaj