Sheer curiosity on my end: what exactly don't you like about W2K? I'd argue that it's a much better fit for these systems.
Mainly the fact that XP is easier to go wireless with for folks like me (brains like mush) than is 2000. I also like the look of XP better than 2000. Granted, the changes aren't radical but XP just appeals to me more aesthetically. Wireless connectivity is a huge issue, though.
Windows 7 does work on it, and for the simple typing that the machine will be used for will be more than sufficient. Bootup is also under a minute (I haven't timed it accurately yet due to the need to reset the date and time due to a dead CMOS battery that will require replacing, but under a minute once the date and time are updated) in Win 7. But, Win 7 is also right at the cusp of what this machine is capable of so a fresh install of XP would probably run somewhat more efficiently and faster.
One last question regarding cooling, are there any solutions if the A series tends to run warmer? Are there more efficient aftermarket fans available to retrofit for my A30? Maybe a laptop cooling pad as a matter of course?
Bob