Hey there,
the installation of Kimai is pretty straight forward. You need a webserver with PHP and a MySQL database. More information on how to install Kimai can be found at
http://wiki.kimai.org/ . There are no special installation instructions for Windows servers but you should be able to figure out how it works.
Another thing: I don't know if it's wise to post your email address on a public forum. This is an invitation to spammers.
Best Regards,
Severin Leonhardt