custom user management

Looking for a drupal themer/developer to help with a project with tight time lines. Go Live date June 1st but must have lead time for testing and tweaking.

Generally this should be an simple project for a seasoned professional. Would like a rough quote and suggestions/ideas.

Requirements:
*2 Sites with unique URLs same layout and theme just different images (possible multi site?)
*Create simple theme with drop down navigation, theme based on sliced and prepared images that will be provided - (mock ups available contact to view)