I did mine a couple of weekends ago. Take photos of the HBV area so that you know where all the pipes and things go. I've still got a vacuum pipe left over...
Also, if you haven't already got one, get the special tool for undoing the hose spring clips. (Bowden cable device with scissor type handle with ratchet, get it off eBay). It makes life so much easier.
I use red rubber gardening gloves for all my car work. Cheap to buy, easy to clean with rags or Cif, tough, easy to take off for fiddly screws, throw away after a week or two. Saves all those scrapes and cuts, and keeps your hands clean for handling the interior etc. Keep your hands warm in winter, too.
Next tip -use a halogen bulbed head torch (eg Petzl, used for caving), with rechargeable batteries. Once you've tried and got used to it, you'll never do any car mechanics work without it on your head. On a cluttered engine bay such as a V6 Omega, it makes it so much easier to see things, especially in the shade of the bonnet or underneath.