When you try to use the Add/Remove Programs feature in the Windows XP control panel, you may have a problem because the list of programs or Currently installed programs comes up blank and never appears.
To try to fix this issue, follow these steps:
1. Click Start > Run.
2. Type regsvr32 appwiz.cpl and click OK.
3. Click OK on the dialog box that appears.
Now give Add/Remove Programs a try.