Mobile Network Sharing?

[Troopfirebird]

I have read with installing HTC sync on my pc with Windows 7 it says I can use mobile network sharing but I can't find a way to enable it on my phone I know Verizon has a additional feature to add onto my plan but I still can't enable network sharing on my phone with HTC sync running, anyway to do this without downloading and installing a third party app to tether my phone to the pc...