This is a standard mini jack to AV lead. You can get these cables from any decent electrical store. If you are in the UK try any branch of Maplins. If you are in the US try any branch of Radio Shack (or whatever they are called these days).
Alternatively do a google on 'Mini Jack to AV Lead'
COMPAQ something or other with 500Gb Boot Disk, 1Tb external Firewire Disk, 4Gb Memory and a super duper sound card, 19" TFT Monitor etc etc etc
Sony TRV33e : Sony TRV310e : Canon XM2
Sony Vegas Studio editions to v11
Remember, there is always more to learn than there is to teach.