Hey Aslain,
I found a remedy to my problem here, I can use the mod through a program called "Wine Bottler" it is very simple to use and it is a free program that allows the installation of your mod pack through your Mod.exe file. if you want to post some thing on your site here for other Mac users that want to use you modpack I will link the site and a small install brief below
download the wine bottler app from this link and install the dmg file
http://winebottler.kronenberg.org
step 1
download you mod as per normal and people can find it is in their downloads folder in finder then they need to right click it as in pic "asliains modpack install 1.png"
step 2
They then need to select the open with and then select wine(ver...) see "aslains modpack install 2.png
step 3
they need to click the run directly in and use the drop down menu in the wine window select " users/......../Wine Files " and then click GO. see "Aslains modpack 3.png"
Step 4
When they open your installer they do need to select the folder that world of tanks is in because windows default location is not the same as mac os. Which is usually in finder/documents.
thats it it will run your mod pack as you have designed it to and it will install the mod perfectly