USR Sportster 56k x2

Howdy, Yesterday I went to a couple of secondhand stores in town. I was excited to find a U.S. Robotics 56k x2 Sportster Modem with the original box (for a Macintosh) for one dollar! I have an identical one that I use & I was glad to get another one to upgrade my Mom's Mac from 33.6k to 56k. I figured it would be easy to update it to v.90 with the USR Update Wizard because that's what I did to mine a couple of years ago. WRONG! The server that the Wizard dialed has a busy signal. After searching on the web for half an hour, I finally tried calling U.S. Robotics. After sitting on hold for 20 minutes & being asked stupid questions for another 10, I finally got my answer. That update server has been down for 4 months ever since USR & 3Com split the sheets. So I asked if I could get a disk to use (the updater can update via phone or disk). NO! Unavailable! So imagine my chagrin now when my bargain modem is hobbled at 56k x2. I think it is only connecting at 33.6k, but Remote Access reports "unknown speed". Would anybody have the disk that the Update Wizard needs to bring me to v.90. Also, I found a Amstrad PC1512 & a Visual Commuter Computer. Are these collectible or just more ordinary PC clones? Thanks, Steve C. Williston, ND