virgin mobile users....how can how can I get calls and texts forwarded through wifi

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http://forums.androidcentral.com – I am fairly new to Virgin Mobile. I have an HTC one V Android smartphone. I work in the lower level of a building that has absolutely no cell service, although we do have wifi. It would be nice when I am expecting an important call or need to be reached by my family if there was a way my phone calls and texts could be forwarded through wifi to my phone. I have been browsing the Internet looking for an app, but not sure if any of them will work with virgin mobile. Does anyone have any suggestions? BTW, I did download groove IP VOIP, but it's horrible! Most of my calls are either dropped or indi (HowTos)