i did this and now IE doesn't work on my phone. Opera mobile does. any ideas?

Hello. I just got a BJII a couple days ago and have been checking out a lot of the things you can do to it. However, I have no experience with changing code on a device like this, but want to modify a couple things that I haven't found any concrete information on. (I know how to program a little bit, so i'm not completely clueless.)

The first problem that I'd like to address is the length of vibration time on an SMS message. I looked around google for a while trying to find some info on how to change this, and only came up with some info on how to update it on a different phone (can't remember which one.) Basically, this is what was said:

"Go to HKEY_CURRENT_USER\ControlPanel\Sounds\SMS create a new string value called Script and in the value data put v#. The # is the number of seconds you want itto vibrate for."

I was wondering if this is something that can be done on a BJII, and exactly how do you create a new string?

Thanks for any help with me learning how to do this stuff
Ben