AutoCAD 2010/2011/2012 DWG Format

[#1]

Hello,

i have installed my Summasketch tablet with the Vtablet Driver (www.vtablet.com VTI64B.EXE).
The tablet works nearly faultless.

Unfortunately I have a little problem at the moment. The single buttons - especially the 3rd button - (the middle click / scroll wheel in Autocad), for example the AutoCad command for "Pan Real Time" do not function. Also the mouse has a similar problem.
Could you help me to resolve my problem or can you give me an adwice what I can do?

- using "real" mouse:
left mouse button, the command is executed
right mouse button, the command is executed
middle mouse button at variable "mbuttonpan = 0 command is executed
middle mouse button at variable "mbuttonpan = 1 and pressed button of the keyboard, it is possible to move the image

- using tablet
Button 1 = left mouse button, the command is executed = ok
Button 2 = right mouse button, the command is executed = ok
Button 3 = middle mouse button at variable "mbuttonpan = 0 command is executed
Button 3 = middle mouse button at variable "mbuttonpan = 1 command is executed and the already described function (PAN) does not work.

When the button (which gets the function of the middle mouse button) is pressed and "mbuttonpan variable is on, the command should work like it is provided.

Can anybody help me?

Thank you.
Norbert