You can uninstall Parallels Pro Control Panel 10.3.4 by using the Add or Remove Programs option of Windows Server 2003.
To uninstall Parallels Pro Control Panel 10.3.4:
The uninstallation process begins and removes the add-ons.
The uninstallation process begins and removes Parallels Pro Control Panel 10.3.4 and the online Help.
Note: The uninstallation process does not remove all install-related items automatically; you must manually remove directories related to Perl, site data, and the files in the directory where Parallels Pro Control Panel 10.3.4 was installed.