[Vibrant Q&A, Help & Troubleshooting] jnoob:
Tim here are the steps...figured it would probably help others that are curious also. This is the setup that worked for me..its somewhat of a lengthy process. To make it easier...keep open the Sipgate and google voice pages.

1)Before we start do you have a google voice account..if yes go to step 2 if not go to the google voice homepage and sign up for a free number.

2) go to sipgate.com sign up for a free account (you will have to give your cellnumber to recieve a key to confirm your new free account). You can remove your cell number from the settings page later.(You can choose to install their softphone software now or later doesn't really matter)

3) Once you recieve your free number from sipgate..(it will be a random number from california) go to the settings page copy the number sipgate given you , navigate to go google voice and add the sipgate number as the number google voice forwards to. Also make sure the number is set as a home number.

4) You will have to verify that number..with google voice..this when you will have to install the softphone software by sipgate. Have google voice call your sipgate number..and through the softphone dial paid just hit the 2 digit number given by google voice to confirm the sipgate number. (You can removed the sipgate software from your computer now)

5) The software i use to make outbound or receive calls..is sipdroid and gvoice callback which are both located in the marketplace and free. Download them both. There are other alternatives , but these are the two programs i used.

6) Once you installed both apps...open up sipdroid go to the settings-> sip account settings... now navigate back to sipgate settings page move your mouse cursor over the voip phone icon and click on credentials. Look at sipdroid now..and input the sip ID provided by sipgate as your authorization name in sipdroid ,the password, and the server is sipgate.com

7. Once you input everything.. sipdroid should register and you should see a green dot in your notification bar. Now open up Gvoice callback put your google voice account details in and put your callback number...as your sipgate number. For the callback setting you can set it as always..or ask it doesnt matter ...up to you. That should be it. ( I have mine to ask)

8. To test if you set up everything correctly turn on wifi...and put your phone into airplane mode. make a call ...there should be a prompt to make the call through gvoice callback once you make the call the sipdroid dialer will come up..and you will receive an incoming call from your sipgate number..just slide your finger up accept call and google voice will connect you to your actual call.

As for receiving calls your contacts will have to dial your google number and sipdroid has to be running to pick up the call. Once you accept the incoming call hit 1 on the dialpad and your connected with the other person on the other line.

*Another tip..to make sure you have everything setup correctly is..sipgate gives you 60 free minutes to make outbound calls..you should only use a minute or 2 confirming the number with google...if you notice your mins going down then you probably messed up somewhere.*

From my experience the call quality...is decent there is minor echoing that can be heard only by the person on the other end..but hey its free. You can also make calls of over 3g. Be sure to turn off sipdroid when you are not going to rly use it because..it can take a drain on the battery as it ..constantly registers itself. I read that you can setup pbxes..to route your inbound and outbound calls..which can help call quality and battery life as its tcp instead of udp , but it was too confusing for me to figure out.

Anways I hope this information helps... :)