Need help with my new HTC pure

Just changed my startup screens to the Wondows Phone 7 ones.  Much nicer than what ATT provides.   

There's 2 different images to change... The ATT spash screen ( a .PNG file) and the actual HTC animation as it's called which is a .GIF file.  Those are what what will change your entire startup screen sequence, unless you want to go further and change the Carrier's splash sreen as well.  All of it is done via Advanced Config like Bruce said.  But you have to get the exact filename and location correct for it to work right.  I wrote down where the files are at so I could enter it correctly.  Worked perfectly upon first try!   

How can I unnistall original programms from a ROM?I want to unnistal the last version of opera.

Regards

ok, I understand that is difficult take off ATT loggon screen. But I really want to know how can I do this.

Regards

Ok, I have another question.
I'm tryed to play movies in WMA in windows media player, but they play very slow and with breaks.
What can I do?
Regards

I can play movies in divx player very well, but i cant do the same in WMP, so I think thats because buffer settings.how can I change it?

About the logon screen, I´m already do what you write for splash screen, but in point 5, it doesn't create a nbh file, but a nb file. SO, when I try to flash it, occurs a error: The update utility cannot open the requested file.Please check your update utility. WHat can I do?
Can you make me this rom? I will attach bmp file here.

Regards

Now, I have a big problem!
I restart my htc and when it starts I insert my pin and next appears an error in ArkSwitch.exe, I ignore, and next apears tap here to launch HTC sense, I tap and it try to join it, but nothing happens...
What can i do?

Regards