it is possible to customize some of the side keys with ALT and/or SHIFT.
The following keys can be customized
Key A (if the Fn Key has been pressed the Key 1 function will change to the Key A function)
Key B (see above)
Also the following options are possible
Set "Key 1" to action "CTRL"
Set "Key 1" to action "CTRL+SHIFT"
Set "Key 1" to action "CTRL+SHIFT+I" (don't know this shortcut but also shortcuts with 3 keys are possible to set up)
What is not possible:
Set "Key 1" to action "CTRL+ALT+ENTF" (if you try to set this the computer will only open the taskmanager"
I tried this with T900 and Windows XP. W7 should have the same options.