ASP.net & CSS Assistance

I have bought an Admin CSS script from [login to view URL] : [login to view URL] I have also created an admin area of my website with an ASP.net data driven login procedure. The site is very simple there is nothing formatted at the moment I have approx 4 pages in the admin area and I would like some help with the asp.net in integrating it into the css. I dont think this is a difficult job for some one experienced in asp.net and css. I need it set up so i can carry on coding the asp.net within the admin script area and there will be other tasks after this project is completed.