thanks to all ,
i finally put a fix.
the following was done.
1. started the system in the normal mode
2. frm the server i downloaded the CWShredder
3. renamed the file name and copied to my system.
4. tryed to extract it , but failed.
5. started the system in safe mode.
6. extracted the same.
7. run it.
8. fixed.
9. again i scaned with spyware frm safe mode.
10. found some spyware affected through the yahoo messenger.
11. fixed it again.
following problem solved.
1.i have restored the home page.
2.pop up of that website stoped.
again thanks for the help
binu george