dcop -> qdbus

Hello,

Up to now (kde3) i used some dcop to do automatic jobs with k3b. Now i 
had to switch to kde4 and finally realized, that dcop has gone. It seems 
that it is replaced with (q)dbus. But i was not able to find the 
neccessary commands to replace my dcop procedere. Here's what i have 
used with dcop:

dcop k3b K3bInterface currentProject
dcop $PROJECT setVolumeID XYZ
dcop $PROJECT addUrl "$file"
dcop $PROJECT renameItem "$OLD" "$NEW"

How to do this with qdbus?

Kind regards,
Henning

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