custom From when sendsms

[Vieri]

Hi,

I can imagine the answer to my question but I'll ask it anyway.

Can I "forge" the sender number in a "gnokii --sendsms"?

I guess there's no way to change the SIM's number unless the service provider 
does it for me, right?

Please note that "forgery" in this case would be "legitimate" because I'd like 
to use "my" numbers only (say I sendsms on several GSM devices but want to 
always receive on just one).

Cheers,

Vieri