Connecting through your ISP wil give you the fastest, most reliable service, and the technique is similar to connecting to a Website.
All software is also available at the BMUG office.
Pull down to the Control Panels menu item, and relese the mouse button. Save your changes when asked. Pull down to the Control Panels menu item, and relese the mouse button. Open the PPP control panel in the newly-opened Control Panels folder. Since you just installed the software, you will have only one configuration, named Default.