as to your problem, what is the exact error you are receiving. if you are still having the same error as above, do you have the device software installed on your PC as well? if you do not, follow http://www.blackberryforums.com/gene...e-telecom.html
that link and install that software on your PC. make sure that you remove vendor.xml and then start Desktop Manager, THEN plug in your BB to your PC.