In Panelbuilder:
Click "File" on the main menu and choose "Download..."
From the download dialog notice the "Transfer Type" selection box. In that field, choose RSLinx.
Press the setup button which will take you to the configure drivers dialog in RSLinx. Within that dialog, you can choose an existing driver, add a new one, etc. When finished there, press close.
Once that is done, you will get the RSWho window in the PB32 Download File dialog. Next, simply browse to the device you want to transfer the file to, select it and click OK.
You will next get the typical "Are you Sure" prompts and warnings...
Hope this helps.
Sidenote: In my job, I find the good old fashioned memory card method to be the simplest for updating panelview programs. Then when a panelview dies in the middle of the night, the floor technician can come up here and grab the memory card and have the latest revision of the file. If I download over our network, I have to remember to put a copy on the card anyway, so I usually just transfer the file to the PMCIA card using my laptop, then carry it out to the machine to put it into the Panelview. Another advantage is that I don't have to worry about losing communication in the middle of a download, and it is by far the fastest (least amount of screen downtime).