Question - Spoofing Caller ID (NOT for pranks or fun)

[syanni85]

Here's my goal. I work for a 3rd party retailer selling Sprint and AT&T. I already have sprint so i decided i would like to get a WP7 device and get an AT&T dealer line (DISCOUNT double-choke!) and use it for business only (don't really want my personal number out there for customers).

BUT, i want to be able to use only one device during the day, so i do plan to have my sprint calls/texts forwarded to my work phone...

alls good right? not quite.

I know WP7 gives you the option to block your caller id, display it, or display only to people from the contacts list... But what about spoofing it to display my Sprint number? Ya know, just so i don't have to call with a separate device and also not have to give my work# to everyone i know...

I don't wanna use a spoof app cuz that ish is crazy expensive for what i'm looking to do...

basically, if possible, i would like to carry around only one device during the day.

I also don't feel like creating a google voice number and having to tell everyone to add it to their contact list.

I think i'm shooting for the stars here, things are never this simple, but i hope you guys can shine some light on it for me.