I tried Igo8 and it doesn't see the GPS on my phone. I did a scan for ports and it hangs on com4 (this is the port the GPS is on).

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Sprint PPC 6600 --> 6700 --> 6800 --> 6900 -->?

there is a freeware app called gps toggle that you can download to turn the gps on and off. i don't have the link right now but it should not be too hard to find. search here or google it.