just found this:
Touchpad 2 Midi - makes your touchpad to a midi controller!!
http://www.livelab.dk/products.php
!!you need a Synaptics touchpad, it only works on that!! 
and to use it in renoise you have to use it as an standalone application, that means you will need
savihost http://www.hermannseib.com/savihost.htm (the smaller version without keyboard will be enough!)
just copy the savihost.exe into the vst folder where the touchpad2midi.dll is and rename it to touchpad2midi.exe!
further you`ll need midiyoke or something like that - the only working virtual mididriver for x64 win i found was
http://www.tobias-erichsen.de/rtpMIDI.html - works well!
just install it & create a session, activate it and take it as midi in device in renoise, open the touch2midi.exe and take the same device, viola your midicontroller is done!
you can activate your touchpad-midicontroller now - by turn caps lock on!
all this stuff is free to use so have fun with it 