Hello, yodro,
Please keep in mind that we are all volunteers here, and that we do have our own "real life" schedules and commitments which we need to attend to before dedicating any of our free time to this site.
Also keep in mind that a wait of 12 hours or more is not at all uncommon on any free tech support site, and that "bumping" your thread after only 1 or 2 hours is, quite honestly, considered to be a bit rude.
That said, your Internet access problem is most likely not a question of the compatibility of one modem over the other, but of the correct configuration of the new device. First of all- is your Sparkcom model one that has Ethernet ports in addition to a USB port, and does your computer have an Ethernet port on it? If so, it is often more reliable to connect the modem/router and computer via Ethernet instead of USB. If connected by Ethernet you would need no special drivers to access the Sparkcom's setup utility and configure it with the correct username/password/etc. authentication settings required by your ISP.
As for why the USB driver CD doesn't work, I have no idea. Can you even browse the contents of the CD, or does it seem to be totally unreadable by your system?