Python26 has been compiled with a later version of the MS C compiler, looks like MSCVP90.dll is one of the runtime libraries, should be somewhere on your computer. If there is such a DLL, you can download it from MicroSoft or http://www.dll-downloads.com/
Are you sure you don't mean MSVCR90.dll?
A note to sravan953:
Giving the missing dll the correct name would have saved quite some time.