Have you tried using an XP manifest file with your app? This will give all controls (that are capable) the XP style. But it will only work for people on XP that aren't using the classic windows theme.

The best way would be to make your own in a user control. Either owner-drawn or using images taken via screenshot of a windows program.

There are loads of XP style controls out there for free if you search on www.pscode.com/vb (Light Templer, Lavolpe, Steppenwolfe, Mario Flores) are a few of the good developers.

Here's the first one I found with a search, not sure how good it is:
http://www.pscode.com/vb/scripts/Sho...41865&lngWId=1

Edit: And here's more by the same guy, they look pretty promising from the screenshots:

http://www.pscode.com/vb/scripts/Bro...riesPerPage=25