Messed up complete MP installation (1 Viewer)

[Wintermute42]

TV-Server Version: not used
MediaPortal Version: 0.2.3.0
MediaPortal Skin: Blue Two wide
Windows Version: Windows XP SP2
CPU Type: AMD Athlon64-3000 Clawhammer
HDD: Samsung SV0802N 80GB
Memory: 2GB DDR-400 Corsair Value Select
Motherboard: Asus K8V-Deluxe
Motherboard Chipset: VIA K8T800
Motherboard Bios: AMI 1005.011
Video Card: nVidia Geforce 6200
Video Card Driver: Forceware 94.24
Sound Card: ADI AD1980 SoundMax
Sound Card AC3:
Sound Card Driver: 5.12.1.3663
1. TV Card: Digital Everywhere FireDTV DVB-C
1. TV Card Type: DVB-C
1. TV Card Driver: 4.8.0.0
Satelite/CableTV Provider: KabelBW
HTPC Case: Silverstone LC13B
Cooling:
Power Supply: Coba 350W single Fan 120mm
Remote: Logitech diNovo edge BT Keyboard
TV: Samsung LE 37 R 72 B
TV - HTPC Connection: VGA Sub-D

I messed up my complete installation
Due to problems with reveiving TV, I tried to update my MP 0.2.3 stable to latest SVN. But after that, the config setup wont start anymore. So I reinstalled my backup I've made before upgrading to latest SVN, but now MP is 'unable to create graph' for the DVB device.

So, my question is, how to make a really clean install of a fresh copy of MP? Its not listet in Windows add/remove software nor in the start menu.

Any help appreciated here... thx!

 

[Paranoid Delusion]

You may need to delete the actual Mediaportal folder, usually found at this address

c\program files\team-mediaportal\mediaportal

Then try reinstalling mediaportal MP0.2.3.0