Hi Fuzmic,
Be careful. There are at least 2 installations of mysql workbench. One just installs the workbench product but the other, which I think you are installng also installs a new version of MySQL itself.
If you have wamp installed you do not want to install the workbench that comes with a MySQL as well. This will just confuse the wamp installation of MySQL.
So install WAMP and then install [
dev.mysql.com]
I use the ZIP Archive and not the .MSI option as I am note sure exactly what the .msi install does.