Problem with My Burner on Windows XP (1 Viewer)

[thebalance]

TV-Server Version: as supplied with RC4
MediaPortal Version: 1.0.0.0 RC4 (on server) 1.0 (on client)
MediaPortal Skin: Blue 3 Wide
Windows Version: XP Pro SP3 (server) Vista SP1 (client)
CPU Type: AMD 4850e (server), 2ghz Core 2 duo (client)
HDD: 1Tb Western Digital greenpower (server), 250gb(client)
Memory: 2*2Gb DDR2 667Mhz (client & server)
Motherboard: Gigabyte MA78GPM-D2SH (server), Acer (client)
Video Card: Radeon HD3200 built in (server) / HD3470 (client)
Video Card Driver: Ati Catalyst 8.5 (server)
Sound Card:
Sound Card AC3:
Sound Card Driver:
1. TV Card: Hauppage WinTV-HVR3000
1. TV Card Type: DVB-S (in use) DVB-T & analog not in use
1. TV Card Driver:
2. TV Card:
2. TV Card Type:
2. TV Card Driver:
3. TV Card:
3. TV Card Type:
3. TV Card Driver:
4. TV Card:
4. TV Card Type:
4. TV Card Driver:
MPEG2 Video Codec:
MPEG2 Audio Codec:
h.264 Video Codec: Television : FFDSHOW
Satelite/CableTV Provider: Freesat
HTPC Case: Silverstone
Cooling: Passive silverstone on CPU, single case fan
Power Supply: Antec Earthwatts
Remote: imon
TV:
TV - HTPC Connection:

I suspect I might be being a little slow today - I've been trying to get My Burner working, unfortunately it doesn't want to play ball with my XP SP3 machine. It will burn CD's perfectly but when I put a blank DVD in it goes through the motions and says completed (I've just tested again using a couple of MB onto a DVD and the disk still thinks it is completely unformatted). Is this just because Win XP cannot handle DVDs as a native media and I still need to buy something like Nero? The My Burner config appears correct so I'm a bit lost as to what I'm missing?

Many thanks