Hi,
Yes, you can share the internet connection from the laptop to allow other colleagues connectivity. You would set it up for NAT, and you would probably want to use the WinGate User Database.
Here is a link to guide you with the setup for the NAT connection method; take particular note of Section 2.; it will guide you to set your NICs as Internal/External. In your case the Verizon card that points towards the internet will be marked as External, and the DLink Access point that will be marked as Internal.
http://support.qbik.com/index.php?_a=kn ... ils&_i=123
Also, PDAs will work with it.