Do not process remote commands when extarnal application is executed(DVBViewer). How? (1 Viewer)

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TV-Server Version: 1.0 RC2
MediaPortal Version: 1.0 RC2
MediaPortal Skin: default
Windows Version: XP SP3
CPU Type: Athlon 4040e+
HDD: Samsung 400gb
Memory: 2Gb
Motherboard: Gigabyte GA-MA78-SGM
Video Card: on-board
Video Card Driver: Catalyst 8.6
Sound Card: on-board
Sound Card AC3: -
Sound Card Driver: -
1. TV Card: FloppyDTV S2
1. TV Card Type: DVB S2
1. TV Card Driver: BDA
MPEG2 Video Codec: ffdshow
MPEG2 Audio Codec: ffdshow
h.264 Video Codec: Cyberlink 7.x
HTPC Case: Antec
Power Supply: 400W
Remote: Logitech Harmony 500, MCE Keyboard
TV: Samsung LE40
TV - HTPC Connection: HDMI

Hi,

I'd like to use DVBViewer as an external application managing my FLoppyDTV dvb-s2 card. Therefore I created a special setup for my remote, which also uses MCE commands like "My TV", "My Video" etc. to control DVBViewer.
The question is:
Is it possible to disable all remote comands handling in the MediaPortal when certain external application is running? Currently when I'm running DVBViewer on top of the Mediaportal pressing for instance "My Video" stwitches to "My Video" task in Mediaportal and do not perform assigned action in DVBViewer.
How can that be done?

Thx,
Vitaliy