If you are having problems only with Internet Explorer 6, proceed as follows:
[Start] [Run] [Regedit]
Registry Key: HKEY_LOCAL_MACHINESOFTWAREMicrosoftActive SetupInstalled Components{89820200-ECBD-11cf-8B85-00AA005B4383}
Modify/Create the Value Data Type(s) and Value Name(s) as detailed below.
Data Type: DWORD // Value Name: IsInstalled
Setting for Value Data: [Change the Value from 1 to 0]
Exit Registry