well.. i think i got my situation under control.. this is my story.. hopefully it helps some of you!
SO... once upon a time, on my old ROM, not sure which version I figured out how to change mode of operation to EVDO ONLY. this was awesome to me, as I DO NOT live in a EVDO SPRINT area... i figured I would try bumping it into EVDO ONLY and sure enough, i got an evdo signal. This was awesome for surfing net but of course, can't make phone calls. I would use this though all the time.
well, a few phones later--a900, moto q, treo700wx, mogul, touch, back to mogul, i tried to EVDO ONLY again and nope, couldn't get a signal. funny thing was when i would run field trial i was picking up a HDR signal..
well... i tried all of the most recent Sprint PRLs, had Sprint do a HLR Reload on my device... had them give me their newest/current PRL, but still.. couldn't force EVDO ONLY..
well today i downloaded Alltel's PRL 300029 from here
http://www.corolada.com/prl/ and used it on my device and WOW, I GET SO GOOD OF RECEPTION BOTH 1XRT and EVDO, but I'm in roaming of course!
so trouble is now.. if i want EVDO, i just have to do a quick PRL switch on my device... my idea of a perfect program now would be to somehow make this quick PRL switch effortless and quick.. or combine the files some how..
hope this story helps.. sorry for bad grammar/spelling.. let me know if you have any questions
TO UPDATE PRL (if you are on Sprint--if you don't know how):
Download and move the PRL you would like to use to your device (doesn't matter where on the device you put it);
If you know your MSL, skip to next step, otherwise get your MSL# by doing this:
-Download the GETSPC.zip attached to this post;
-Move the folder onto your device (again, I don't think location matters);
-Run the GetSPC application and enter your ESN--can be found here (settings-system-device information) (make sure you use caps)
-the output will be your MSL#
After you know your MSL#,
Run the EPST Config (i'm not sure the ## code, might be 778 if i remember) (find your EPST in your WINDOWS directory on your MOGUL--it is called EPSTConfig);
Click EDIT, type in your MSL#; left softkey VIEW INFO, select PRL.
Select the Update PRL File row, hit Menu, Edit.
The PRL file you wish to use should show up when you hit Browse. Hit OK.
Hit right softkey Menu, OK-- Yes to "Update these Items"
Your phone should ask to reset itself and when rebooted should be running the PRL you just updated.
let me know if you need anything else!