Making the company page is simple:
- On the top navigation bar click 'Interests' and select 'Companies'
- Click 'Create', the yellow box on the right sidebar
- Verify you are an employee with a company e-mail
- Fill out the information and images
- Tell employees the page is up if they'd like to add it
Image Dimensions : http://help.linkedin.com/app/answers/detail/a_id/32617/~/adding-a-homepage-…
Company Page FAQ : http://help.linkedin.com/app/answers/detail/a_id/1561/related/1