Hi,
you may convert MLCad parts lists to Bricklink wanted list (Wanted List Mass Upload) online at
http://mlcad2bricklink.com/
Doing so lets you search all needed parts for a MOC at once.
The Tool is beta!
It does not reflect differences in part numbering between MLCad and Bricklink. Simply because I just don't them.
The tool's language should be English unless you browser with German settings.
At the moment it just supports copy & paste.
Kai