I have the Verizon 740 WWAN card - with native support in OSX. It works brilliantly. (1.5M down, up to 800K up) Using a Windows XP guest under Parallels 3.0 works well too. No problems. However if I just close my MacBook without shutting down, when I reopen/restart it Windows detects a "new device" and OSX no longer sees the 740. The only way I have found to resolve is to close the Windows VM so OSX then sees the WWAN card. There has GOT to be a better way. Ideas?