Custom Logon screen help??

[Zyther]

I have a few questions on making a custom logon screen for my UI.

1) Is there a way to change the colors for the EULA and Username password screens?

2) When altering or making a new DDS file I loose transparency every time I save it, why?

3) Is there a way to get rid of the DELL and NVIDIA ads as well as the timers that are set to display those objects?

Background Info: Using Photoshop CS with NVIDIA DSS plug-in.

Thanks in advance