Installing Acronis as a part of plesk

[dimensionav]

Hi

I bought a server in wich are installed third party applications controlled by Plesk (MailEnable, MySQL and many more) but it seems that Acronis true image is not installed because the Acronis button appears to be disabled inside Plesk Panel.

Wich version would be the right one for Plesk 7.6.1 ?
wich would be the procedure in order to integrate Acronis to Plesk Panel?

Thanks!