You can try uninstalling the existing driver and then manually install the new one when the "found new hardware" dialog pops up.
XP Mode is actually a standalone XP install in a virtual machine, so it's exactly like having an XP based computer on hand, but it's only available on Win 7 Pro. If you have an old XP install disc laying around, you can accomplish the same thing by using VirtualBox to set up a virtual machine yourself and installing XP to it.
Originally Posted by Shocker_Monkey
I'm on 2.2 as well. I was planning on doing the update this weekend. Does 2.6 (or 2.2 for that matter) allow for 12.5bps?
Yes. You should be able to go down to 12.5 with the 2.2 software too though. I think the MROF is adjustable from 10 to unlimited.