WegDan52

Hi everyone, I have Windows XP - Home Eddition and is running ok. Until I tried to download Realplayer. The downloading was ok, but when it comes to installation, I got this error saying : installation failed error "%RN COMMON%". Only with the Realplayer, I've been downloading others programs like iTunes and QuickTime had no problem. Something else I found out when I tried to use run command, some of the commands can't be run and always get the error message that Windows can't find it ( like progman, sfc, icwscrpt, Tips.txt, cleanmgr, etc....). Be kind tell me, what I have to do to avoid both problems? Thanks in advance WegDan52