If you want to tether over wifi, here is a free way. It does not require any of the above programs. Took me a while to figure out all the settings. On the Saga:
1. Go to Start - Settings - Connections - wifi
1a. Change Networks to access to All Available (this may be optional)
1b. Click Add New [Wireless Net]
1c. Network Name: Saga
Connects to: The Internet
Check "This is a device to device ad hoc"
Click Next
Authentication: Open
Data Encryption: Disabled (You can lock it later if you want)
Next
Finish
1d. Turn OFF your wifi (for the time being)

2 Download ICScontrol to your phone from
ICS Control v.21 - utility for controlling internet connection sharing - xda-developers
2a. Run the app and set the following settings:
Public interface: Cellular Line
Private interface: AR6K_SD1 (wifi card)
Check Set Private IP
Check Auto Connect to Network with "My ISP"
Click Save
Click Start ICS

3. Start the wifi adapter and make sure it is using the Saga profile. Also make sure the phone can send over the internet through the EVDO. Check your email or browse something to be sure.

4. From your laptop (PC) make sure it can connect to ad hoc networks and browse for one called Saga. Connect to it and you should be surfing.

A couple of caveats. First, supposedly there is no way for a carrier to detect if you are tethering using this method. Use at your own risk. If the phone goes into sleep mode you will lose the connection so change your power settings appropriately.

After you have things setup the first time, simply start ICS Control and click Start ICS THEN start your wifi adapter to assure it gets the right ip. If you do this backwards (starting wifi first) it may not work.

Cheers
PS
You can also use icscontrol to tether via usb by changing the private adatper to RNDISFN1, via BT by changing to BTPAN1. You can do all kinds of crazy stuff like making your phone into a wifi adapter for your computer too Pub=AR6K_SD1 Priv=RNDISFN1 etc etc.