Have you tried using RevoUninstaller, using the Advanced Option for deep scan of registry and hard drive for leftover application files/data?
Revo Uninstaller Freeware - Uninstall, Remove Programs, Solve uninstall problems
Available for download off CNET Downloads as well, works well for me, and its free. Can always give it a shot
Revo Uninstaller Freeware - Uninstall, Remove Programs, Solve uninstall problems
Available for download off CNET Downloads as well, works well for me, and its free. Can always give it a shot

My Computer
System One
-
- CPU
- Intel Core 2 Quad 6750 Kentsfi
- Motherboard
- MSI P6N Diamond nForce 680i
- Memory
- 4GB Corsair XMS2 Dominator DDR2 800MHz
- Graphics card(s)
- EVGA GeForce 8800GTX 768MB PCI
- Hard Drives
- 2x Western Digital Raptor X 150GB 10k RPM SATA 1.5GB/s (raid 0) 2x Seagate Barracuda 7200.10 500