Getting Win95/98 screensavers to work in XP

For years, I've been wondering how to get the old Windows 98 Plus! screensavers to work with XP; I especially liked the "haunted house" one titled MYSTERY.SCR, but simply running it in XP results in a black screen. The conventional wisdom was some of the old Win95/Win98 ones just weren't compatable with XP, even when run in "compatability mode". I'd pretty much accepted that they were never going to work on XP machines. However, last night I gave it another Google try, and came across the solution here and here (more discussion on the themes here). It isn't extremely easy, but it is doable:
( Procedure behind the cut )

A little lengthy, but I have been able to get the screensavers to work under XP by doing this.