Default Qtek 9100 boot screen

Hi,

I have a Qtec 9100 with WM 5.
When I start it I get the custom boot up screen (white with VODAPHONE written accross it).

Does anyone know where this graphic is (or name of it) so that I can customise it.

I can access the windows dir via ActiveSync and figured that maybe I can access this graphic there.

I want to do it because I bought the unlocked phone, and I have O2 not Vodaphone. I know it is something I can live with, but if I can access this file it would be good.

Has anyone done this before?

Thanks

Adrian