Indexing URLs for SharePoint List items are useless

The URL we use is:

http://myhost/Lists/Tasks/2_.000

... which comes out of the FileRef field. The actual URL to use for display is:

http://myhost/_layouts/listform.aspx?PageType=4&ListId=

{1BD4F07D-A210-45A7-9C91-D296B1AB73EE}

&ID=2&ContentTypeID=0x010800DE3D7FC80C8CFC4BA00DFEC40120E795

... which I don't have any idea where they get. It's possible, though, that there's a better choice available for a list item URL, which we could put in the carrydown data alongside the FileRef url.