I installed the XOOPS 2.0.9.2 from the fantastico section of Cpanel of my site to this address:
http://iranview.com/xoopstest4
there was no error in installation , but when i go to the above address to see the result os installation , I see only a blank page!!
please help me.

there's a whole FAQ section dealing with errors and troubleshooting..

but i would recommend NOT using fantastico, it has a good habit of screwing things up.. and as u say it installed 2.0.9.2 then it's way out of date, and 2.0.9.2 had bugs in it which is why 2.0.9.3 was released a day or so after 2.0.9.2.. we now are on 2.0.13 which has lots of secuirty and bug fixes.. i'd recommend downloading that and installing manually, via ftp etc instead of using fantastico..