Fixing my external IP address

[crudler]

Hi all,

I know this has been asked before, but i can't seen to find a solution.
Is it possible to apply for a fixed IP on my 3g (vodacom or mtn).
For security reasons, i need my ip to be fixed, and I cant make use of a dyndns type jobby because the system i use only accepts IPs, not domain names.

Is this at all possible?

Thanks
Craig

EDIT: oops - maybe this is the wrong thread. I'll repost elsewhere