Best place to get Longhorn builds? - Inspiron 530S

I have an Inspiron 530S that was manufactured with XP. These systems also shipped with Vista.

I was wanting to get a few Longhorn builds to play with. Drivers are not a concern as I don't plan to keep it on here. I just wanted to experience at least the OOBE and explorer (UI). 

Does anyone know the best place to get Longhorn builds? I also want to burn them to a CDRW. What are some good CDRW programs. This will be ran on real hardware temporarily. 

If anyone here is experienced with VM, could you provide good sites with good installs of longhorn that I can burn to a CD? I thought that my best bets would be Internet Archive or Softlay, but I don't want any modified versions. I want an original, un-tampered longhorn build. 

This question may be intricate or simple.