How to reset user settings in Windows XP?

Open Windows Explorer.
Click Tools -> Folder Options.
Open the View registry tab.
Select "Show hidden files and folders".
Close the Folder Options dialog.
Open the folder "C:\Documents and Settings\<YourUsername>\Local Settings\Application Data\Polenter_-_Software_Solut" in Windows Explorer
Delete all folders beginning with "DesktopReminder2..."