728 X 90

Home page, top most banner near MAST HEAD

300 X 250

First Banner, in Home Page

728 X 90

Home page

300 X 250

Second Banner at RHS, Home Page

600 X 600

Frequency should be 1/24 per Unique user

less than 200 x 728

Also can go as per Geo Location (if possible)

....

If possible