Ron, have you un-installed it? if so what has it left in the reg?
Safe mode: > just hit F8 whilst the machine is booting up and you can select safe mode from there. What it does is load the minimum amount of drivers needed to run the machine without starting Windows. You can perform a lot of tweaking in safe mode as Windows will not be using the system.
MSCONFIG: > is a shortcut to msconfig.exe, you just have to type MSCONFIG into run and hit enter. The advise you will have received will no doubt have told you to disable the startup message. You would just have to click on the startup tab and un-tick INCD. You Will not be bothered by the message again.
You will be asked to restart your machine, when it reboots you Will get another box appearing on-screen saying something like 'Windows is using selective startup', just tick the don't show the box again.
There is a patch (update) for INCD, if you click here you can download it. You will however have to have INCD installed for it to work.
Its 5Meg and should repair the fault you have with XP.