I had a heck of a time getting this "Dell Wireless 5600 (EVDO-HSPA) Mobile Broadband Mini-Card" mini pci cdma card working with Windows 7 and my E6400. The drivers are contained in the Control Point Connection Manager package. Here's the current version at this time.
Install the package. The drivers still won't be installed at this point, though. Open the Computer Management panel, go to the drivers and update the driver for the card. You need to "browse manually" for the driver and point it at
C:\dell\drivers\R218755\Qualcomm\Drivers\Source\Module Retargetable Folder\QCUSB-Dell\DriverPackage\Qualcomm\Win64\AMD64
If you point it at a higher folder and tell it to search sub folders it will try to install the wrong driver.
At this point the drivers are installed but the control point connection manager still does not see the device. I also tried the Verizon VZAccess app with no luck. If anyone knows how to make this work please let me know.