Customize post voting plugin to fit my needs

I kindly need some help from you, if is possible.
I've a page like this to create

http://www.premiodragodoro.it/videogioco-scelta-del-pubblico/
it is possible tell me how i can do this trough your post voting plugin?
1- i would need to enable user registered to vote a single game on this page(see img1 attached).
2- i would need to change a custom button like the buttons you can see in img1 attached
3- i would need to add an alert that show to user that him has already vote
4- i would need to redirect your alert to login from the admin login form to a front end login, and remove the vote count (see img2 attached)

Can You help me to understand how to do all of thing?

thanks in advance
Giuseppe<code></code>