Soundblaster Audigy 2 - Pci 24bit Soundcard for £87.70
Inspire 6.1 6700 - Uk for £93.18
All that for £1,487.35 but I still yet have to add the keyboard and mouse since I dunno which to choose and for the OS, you can save money by looking round.
However, if I had £2,000, I would just build 2 PCs for £1,000 each and you would still get some of the latest components in there or buy a top-spec PC from a manufacturer like Evesham or Mesh and then upgrade it yourself which shouldn't cost more than £1,500.
The only componant i would add to the list above is a pioner multi-region DVD rom drive from OCUK. One of the most important decisions i feel you will make is the case. You dont see those groovy red PCB's but you do see the case. M