AT&T Option GT Max 3.6 Express  

I just get this card driver to work with it.

A) Driver Installation

1)First get this driver.

GTConnect 3G Driver 3.313.zip - Free software downloads and reviews - CNET Download.com

By the URL above.

2) download and Unzip it.
3) Plug in your Express Card
4) if windows look for drivers, just point it to the drivers folder where you just extract it. 32 bits or 64 Bits
5) it will install the driver. totally got 4 unknown detect by windows. Just located the driver to it.

B) Workable Dialer

1) Download the AT&T Communication Manager 6.10

http://www.wireless.att.com/business...p-ACM-6.10.exe

2) Install ,restart.

3) Your are now able to use AT&T Communication Manager with Option GT Max 3.6 Express Card to make a Dial up over WWAN.

I have not tried this yet, but I read another thread that you can go to Sierra Wireless and download their 3G Watcher program (which is made for their cards) and it will work on Windows 7 without causing the problems that Communication Manager Causes. I have had the same problem and AT&T service is no help (as usual).

I have the same wireless card and am using Windows 7 RC 64 bit. Could not get it to work, also disabled Internet Explorer and Outlook. Bummer. Tried everything including loading 64 bit drivers. Finallly went to the Option website, went to downloads and put in my card serial number. Lo and behold they have their own software (free) called Globetrotter Connect. Did a system restore to get Communication Manager off my machine, then downloaded the Globetrotter Connect and installed. It worked! Not hassles, not bloated like Communication Manager. And -- it's fast as lightning. Suggest you try it.