Modify login screen question

Hello,

I would like to modify the login screen extensively to better match my current web environment. I have looked for the html flies to modify, but I can not seem to locate them. Can someone help with this. I can find the .gif files and make modifications directly to the images, but I am really needing to modify the html code and make some modifications. Please help.

If the html code is housed in the SQL database, then I would like to request an interface to make modifications.

I am in the final testing stages of Service Desk Plus for my IT Services company and I am getting ready to purchase the Service Desk Plus to use with the future release of OpManager RME and making modifications to the html code will be desired for branding reasons.