I think this matches up with all requirements, if you wanted a better TV card you could drop the soundcard as the onboard sound is pretty decent I believe.
Gigabyte GA_965P_DS3P (Socket 775) PCI-Express DDR2 Motherboard £74.99
(£88.11) £74.99
(£88.11)
Creative X-Fi Xtreme Audio 7.1 Soundcard - OEM £21.99
(£25.84) £21.99
(£25.84)
Microsoft Windows Vista Home Premium 64-Bit Edition DVD - OEM - 1Pk (66I-00788) £63.99
(£75.19) £63.99
(£75.19)
OcUK Value Hanns-G HW191D 19" Widescreen LCD Monitor - Silver £94.99
(£111.61) £94.99
(£111.61)
Antec NSK6500 Super Midi Tower Case - 430W PSU £58.99
(£69.31) £58.99
(£69.31)
Compro VideoMate U3 DVB-T Stick Digital TV Tuner - Retail £19.99
(£23.49) £19.99
(£23.49)
LiteON DH-20A1P-45C 20x DVD±RW x12 Ram Dual Layer DVD-Writer (Black) - OEM £14.50
(£17.04) £14.50
(£17.04)
Seagate Barracuda 7200.10 200GB ST3200820AS SATA-II 8MB Cache - OEM £37.99
(£44.64) £37.99
(£44.64)
PowerColor ATI Radeon X1950 Pro Extreme SILENT Heatpipe 256MB GDDR3 HDTV/Dual DVI (PCI-Express) - Retail £79.99
(£93.99) £79.99
(£93.99)
OcUK 2GB (2x1GB) PC2-6400C5 800MHz DDR2 Dual Channel Kit £56.99
(£66.96) £56.99
(£66.96)
Intel Core 2 Duo E4300 "LGA775 Allendale" 1.80GHz (800FSB) - Retail £65.99
(£77.54) £65.99
(£77.54)
Sub Total : £590.40
Shipping cost assumes delivery to UK Mainland with:
City Link Parcel Next Day (Delivered Mon-Fri)
(This can be changed during checkout) Shipping : £12.95
Vat : £105.59
Total : £708.94