I'm trying to upgrade our NetBackup system so we can back up Exchange
(currently running NB 3.4). I was going to install 5.0, but there
seems to be a lot of issues with it (?) and going through the initial
install there's this whole thing about VxSS, which claims it's on a
"clearly marked" CD, but it isn't. Some googling seems to indicate it
hasn't come out yet. I can't tell from the doc if I need this piece,
or if I can just skip it, or what.  

So then I was thinking about just going to 4.5 until 5.0 was a little
more stable (and all the parts out), but can 4.5 back up Exchange
2003?

I'd certainly appreciate (always do!) any guidance or advice you folks
can provide.

-Suzanne