I was having the problem some people here have mentioned where Parallel's shared network option was greyed out. Both other network options were available and worked, but Shared networking was never available. I wrestled with the software on and off for a couple of days until today I finallly got fed up and un-installed Parallels, zapped the Mac's PRAM, then re-installed Parallels. Voila, it works. I used the same drive image the previoius Parallels install did, I just re-installed the software itself. Maybe just zapping the PRAM would have fixed it, but now I'll never know. Either way I thought someone here could make use of the information.