Ok, I did come across a few posts that describe how ZTE MC315 can be connected and used to access Internet. 
Any ideas, how I can use it to send SMS? 
I own an LG RD 3330 phone and a ZTE MC315 Card. 
I am able to send emails using my phone. However, I would also like to be notified by SMS everytime I receive email. 
The service from Reliance (R World) is a bit slow and charges Rs. 3 per session. In addition, it gives me an email address of the kind MYPHONENUMBER@reliancemail.com 
I would like to use myexistingemail@mytld.com 
This is what I am planning to do: 
Use fetchmail to periodically check for messages on the server. 
Retrieve message 
Parse retrieved message and recreate a smaller version enough to fit in 1 SMS. 
SMS the message to me using ZTE Card 
(My computer is on almost 24 hours so this is not a problem) 
Can someone advise how I can establish this? That is, how I can use the ZTE Card from Linux to send SMS?