I would advise them to keep what they have until the required the purchased of a new PC or Laptop. If Vista is expensive as XP for the upgrade.
I supply Support and Installation services to SME's here in the UK. Microsoft Software (IMHO) is great software. It's just real hard to sell good software when you don't get any real advantage for the investment.
You can go out today and Purchase a PC with XP Pro on for around £300. Which is cheap and will do most tasks for the advage office memember, now add on office, £ 120 to £200. (depedning on which version on how it's purchased FBP, OEM, etc). Now your £300
pc is £500. (with out any screen).... now but 20 of them for the office staf... yep you have just spent 10k.
When Vista hits the shelfs so will office 12, not everyone will upgrade due to the cost implecations.
It's to early to say if Vista will be worth the upgrade, I have installed MSN desktop search onto some of my clients PC's and every user from young to old had said to me they find it real useful, which makes me think when people use Vista and it's search
along with Virtual Folders (very bad name btw!)... will this be the killer app that will push Vista to the masses.....?
There will be lots of useful stuff in Vista for rolling out across networks and managing, but I would be selling it for the benfit of myself and not my customers....
Sorry to rant a little...... Enjoy!