A question about themes

Hello, in the foundation where I work we are going to use drupal in a new web.
I'd like to know if there is any problem to make this themes in drupal

http://www.scoutit.it (of course we arenot use flash or ajax, only how to show the information).

http://www.fa-ro.de

http://www.solutionroom.de

We want to work with the idea of these websites and look how drupal works with it.

Thanks

oskar