Hi, folks: My friend asked me for help and this is beyond my ability. Perhaps members here can lend me a helping hand. He got winxp home sp2, all pathes updated. lately after reinstall its O/S, he has problems installing some apps using window installer 3.1, keep getting internal error 2203, such apps as McAffee's, perfect disk, Diskeeper, even Adobe Reader. I looked up at Microsoft's web site, not much help, except asking to rename files. I did not have this similiar problems. Could this window installer 3.1 (patched lately ?) is corrupted, or files missing? Remedy plaese. Thanks in advance.