that's Not true... if you install windows you need a license.. no, oem one is not good.
if the OP has/wants only a pc running, the better is to use windows (and skype), install vmware and setup a virtual sme..
my 2c
Stefano
Of course you will need a valid license. But most Windows 2000 licenses are not in use any more. It is actually possible to byu a second hand license for allmost nothing. I think I have something like 10 or more myself that normally would be used for nothing.
I actually tested for a while with Vmware on XP and Centos 64 for a while, running two PC's side by side.
What I ended up with as the best performing, and overall the best solution is without doubt Vmware on a minimum installation of Centos.
Taste might be different, and opinions might be different. After ten years with servers at internet, my opinion is that Centos 64 with Vmware and then some installations of Smoothwall, SME server, Asterisk, Windows 2000, and other Linux and Unix distros as required, this is the best server/gateway installation I have tried ever. Skype is just a OK addon on that.
The only real physical requirement is I belive 1 GIG of RAM. I'm using 4 Gig and thats leaves approx half of the RAM unused according to "top". Average processor load is close to zero. (As the virtual Smoothwall firewall filters all network traffic and reduce it to/from only approved source ip's. This leaves the SME logs for zero registred hacker atempts and zero irregular traffic for the last eight months)
If you do not have to much ram you just have to reduce the number of virtual machines you run at one time.
Treads should not be off topic, but if the fact is that Skype can run and perform very well together with eveything else, via virtualization, it should not be off topic.