I have found this:
I have P2kCommander-V5.0.8-MR and p2k/usblan checked as long msu is running in background works good for me....I also have a z6m alltel
and this
http://www.youtube.com/watch?v=x_xDes6gJUkIts strange, looks like z6m is simple p2k/p2k05 phone
Anyway if z6m is linux phone, just like z6, you need "p2k over usblan" mode in options dialog
If p2k/p2k05 phone you need "p2k/p2k05" mode in options dialog
You must use P2kCommander-V5.0.8-MR, which is automatically detect phone type, i hope
download it from here:
http://www.el-co.hu/smf/index.php/topic,300.0.htmlp2k drivers also needed before
good luck