Speaker compatibility

Yes, they are "standard" analog powered speakers and will work with the new PC. 

 

However, since you are going for a new PC, go for a new set of speakers.  Like other products for the PC there have been improvements in PC speaker systems.   I just replaced the defective speakers on my second (mostly test) PC with some inexpensive speakers that were on sale at Best Buy - surprisingly the cheap speakers sound better than the older ($100 at the time) speakers.

 

Another note, if you are going to buy a new Vista machine, you will need to check the compatibility of your peripherals (printers and scanners) as some are not Vista compatible.

I got my Logitech X-540's a little over a week ago and am well pleased with them. I really noticed a difference with playing MS Flight Simulator.

Dell XPS 600 3.0ghz
2gb Ram
WD 160gb Sata HD
DVD-ROM
DVD-RW (Plextor 760A)
Creative XF-I Extreme Music
Logitech X-540 5.1 Surrond speakers
EVGA 256mb 7950GT
Dell 2007WFP (I-SPS panel)
13-1 Card Reader
NSW 2006
NIS 2006
Win XP Home SP2
BIOS A11