DLL problem after updated to Win XP PRO

I’d updated a Sony Vaio VGN-A150 notebook from XP Home to XP PRO, but every time the XP start, I have this error message: Error loading IRPROPS.CPL, the specified module could not be found “. I don’t have the idea where it belong, I haved update windows, also the notebook from Sony, but have the same message, also, my wireless connection doesn’t work at all, looks no problem but I can’t connect to any network, please help me!!!!