The phone needs needs to be rooted and a custom rom like cyanogenmod needs to be installed in order to change the notification bar.

We can't get custom roms until we get a working custom recovery.

Just be patient. The devs working on this should have a working custom recovery in a few weeks.

 

A custom recovery allows you to back up, restore from back up, and install roms. It has to be built for each device for it to work correctly.
Rom manager will most likely not work correctly at this time. It uses ClockworkMOD to create the backups. As of right now, no one has a stable CWM on the warp yet.

DO NOT INSTALL ANY ROMS OR RECOVERY FROM THIS.

 

you dont need a custom recovery to change the notification icons nor do you need a custom rom unless you theme. you will however need a paid app called "Rom Toolbox" you can make all the icon changes you need from inside the app..... i did it on my phone without any issues. MAKE SURE YOU BACK UP YOUR FRAMEWORK_RES.APK when the app tells you to.

As for the icon pack you cannot use it without the custom recovery and rom. but rom toolbox has a ton of icons to choose from im sure you will find some to suit your tastes

 

Got no idea... I know there are honeycomb icons and 4g icons. I don't get into the whole HTC themes

 

Titanium will just back up your apps nothing else. A custom recovery backs up everything.
Yes, the "tested-wanted" thread is the custom recovery that is being worked on. It is almost finished. Once it is finished, we will be able to make a complete backup of the phone.

I still have my prevail. They have some great developers over there that made the phone so much better.