Acer TravelMate 2300 Notebook "install wim xp" Questions

...wim. vista, and installed all available drivers, but aftr that the cam stopped working wz yahoo, it works wz all other programs like oovoo, msn, but doesn'r work wa yahoo, it gives me msg there is no ...

...wim. It also says the file does not exist and to make sure all files required for installation are required and I get the error code 0x80070002 This error is due to.... The default security provider ...