Ah I understand.
Well in my environment, we're mostly running the Office 2003 suite of software, so I'm not using the full integration features that Moss 2007 allows for, however it works quite nicely. I'm personally running both versions of office as we're using web based InfoPath, so these have to be authored in InfoPath 2007, But the users are just running IE6.0 (We're waiting for our SAP implementation to support IE7.0 before we upgrade.)
The basic user machines we have are Laptops running Xp SP2, ranging from 512Mb up to 2Gb, none of which have any major problems with SharePoint usage. The thing to watch for are the users that insist on having 6 word documents open, along with a couple of excel spreadsheets, Outlook in the background and the odd SAP desktop application. A certain amount of user expectation mangement is required in these circumstances as they seem to think that desktop resources are unlimited.
We also have some users running vitual desktops from thin terminals as a proof of concept, These seem to be working quite nicely with a 2.5Ghz processor cap and 1Gb of maximum available memory.
Paul.
www.myfatblog.co.ukMCTS: WSS 3.0
MCTS: MOSS 2007