Well, the one big advantage HP had in the Windows Home Server game maybe about to disappear. Someone has found a relatively easy way to enable remote Time Machine backup to a WHS. It’s probably only a matter of time before a rough GUI version appear followed up shortly later by a well-polished solution.
There are some small drawbacks of the current version. You have to manually delete old backups and such, but it’s a small price to pay to back-up your Mac to your WHS. You really should check out Brent’s site for all the instructions which I can confirm do work. Thank goodness.