Reformatting is taking a sledgehammer to a walnut.

Like many others I don't have problems running daz and poser together (although I'm not sure which daz version at the minute).

If you do have problems, I'd advise getting hold of a registry mechanic software program such a norton windoctor, registry mechanic etc, which can solve a hell of a lot of problems with software.

I don't think people realise how many problems there are with files not registering properly or wandering off on their own.  Even on a clean install of XP I would expect at least 50 problems - I've come across over 700 on some simple setups!