I know there are win2k drivers for your hollywood+, I got them from http://www.dvdutils.com. Check it out, it should be under sept 28th. If you can't find them I will update my win2k files page with them.
http://home.istar.ca/~jha_tam

i get sort of the same problem except that i get a blue screen everytime i shutdown or restart, the drivers i got were from dvdutils.com that were from sigma for the hollywood plus and win2k, b4 i used the drivers everything went fine.. i could play movies if i used dvdplay from ms, only if i had WinDVD istalled otherwise it would not detect the card.. so the only thing the drivers changed were that annoying blue screen, and even after i unistalled the drivers i still get the blue screen, im thinking of formatting just to get the screen to go away ..i'll try some other fix meanwhile ..if i get anywhere i will post.

OK, the problem disappeared when I installed the new version of the drivers from Sigmadesigns. You can find it in the same location as the previous ones ( ftp://ftp.sigmadesigns.com/outgoing/ ) but they are dated 10/06/99 (alpha drivers v1.1 instead of 1.0 )