On the Start menu, click Run. In the Open box, type "Regedit" without the quotation marks and click OK. Open the following registry key: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W3SVC \Parameters\ScriptMap On the Edit menu, point to New, and click String Value. Name the value .pl and press Enter. Select .pl, and click Modify on the Edit menu. In the Value Data box, \perl.exe %s %s NOTE: The "%s %s" is case sensitive. (e.g. "%S %S" will not work). Close the Registry Editor, and restart your computer.