Error while running .cab files.

[luckyshahoo]

Hi,

I have a Benq E72, WM6.5 CE OS 5.2.21234 build 21812.5.0.50 phone.
I am trying to run a .cab file and I am getting the following error.
The cab file is to enable English T9 feature.

?Installation was unsuccessful. The program or setting cannot be installed because it does not have sufficient system permission?

I have placed the .cab file under "My Documents".

Please help me.

Also, how to edit the registry of a CE phone? Please explain the steps.

regards,
Lucky