I'm trying to install Microsoft Streets & Trips from a USB drive (the netbook has no CD drive). There are two installation discs. Installation runs fine from disc 1, but then it asks for disc 2, and doesn't recognize the USB drive as containing disc 2. I tried copying the discs to two folders on the C drive, but then I get a message that the program will not install over a network. Is there a solution to this problem? Thanks!