Creating remote button to hide/show tv osd (1 Viewer)

[bakerpr]

MediaPortal Version: 1.1.0.0
MediaPortal Skin: Maya
Windows Version: W7 Home Premiem x64
CPU Type: Intel i5 750
HDD: WD 500GB
Memory: 2GB
Motherboard:
Video Card: Nvidia 240GT
Video Card Driver: 190.38
Sound Card: Realtek onboard
Sound Card AC3: 1 coaxial / 1 optical
Sound Card Driver: 6.0.1.5548
1. TV Card: Technotrend S3200 + CI
1. TV Card Type: DVB-S2
1. TV Card Driver: 5.0.1.8
2. TV Card: Technotrend S3650
2. TV Card Type: DVB-S2
2. TV Card Driver: 1.0.3.8
3. TV Card: n/a
3. TV Card Type: n/a
3. TV Card Driver: n/a
4. TV Card: n/a
4. TV Card Type: n/a
4. TV Card Driver:
MPEG2 Video Codec: powerdvd8
MPEG2 Audio Codec: powerdvd8
h.264 Video Codec: powerdvd8
Satelite/CableTV Provider: Astra 28.2E
HTPC Case: UVEM
Cooling:
Power Supply:
Remote: Gyration GYR3101CKUK Media Center Vista Remote - Compact Suite
TV: Panasonic TH-50PH9BS Plasma
TV - HTPC Connection: Sub-D

I have managed using guides on this forum and EventGhost to activate the 'Green Button' etc on my gyration mce remote. Another useful function would be to map the 'show/hide osd in fullscreen Tv mode' keyboard shortcut to a remote button.

Any ideas?