Hi Candle,
I plan on posting an update to my post today because I think I might have been a bit misleading. MobiStealth's PROX does work on CDMA, but only on the cell phones that I listed in my post, which were the HTC Hero & Eros. Other phones have yet to be confirmed. However, the Adventure V750 is not a smartphone as you said, so even if MobiStealth worked on all smartphones, it still would not work on the V750.
In order to install spy phone software, the phone of the person you want to monitor must have a smartphone. Here is a link to a recent post I made which explains the easiest way to check if your phone is compatible.
Spy Phone Tip: How To Do A Quick Phone Check
Hope this helps.
SPG