Please help SMS Char limit

[kyddox]

Hello, i have a Palm Treo Pro with winmo 6.5 IconROM.

my problem is:

The rom comes limited to 160 chars for sms but im from mexico and my carrier and all the mexican carriers support only 150 chars. by this, when i send a sms longer than 150 chars the other person recieves it incomplete and now, the only thing i can do is type 10 spaces between 150 and 160 chars to continue typing the message on the char number 161.

i want a yo know a registry tweak or something to change the limit from 160 to 150.

if someone can help me i will be very pleased. thank you.