Windows 7 not recognizing device - Dell Wireless 5620 EVDO HSPA Mobile Broadband Mini Card

Windows 7 is not recognizing my Dell Wireless 5620 EVDO HSPA Mobile Broadband Mini Card (Qualcomm Gobi 2000).  I can't even uninstall the driver, it says that I don't have "sufficient permission" to stop device or something to that effect (though I'm an administrator).  I also can't re-install the same or different driver.  I might have installed the wrong driver, though this is supposed to be the correct one according to Dell after typing in my service tag.  I went to the FTP to get one specifically for "Verizon Wireless", but I can't uninstall the prior driver.

How can I fix these issues?  Thanks.