So I found this field Activation Manager just wanted to see what information it had

Status

Used serial number: xxxx-xxxx-xxxx-xxxx-xxxx
Status of the serial nuber: OK
Activation date: 3/22/2011 1:14:25 PM
Hardware ID: xxxxx-xxxxx-xxxxx-xxxxx-xxxxx-xxxx-xxxx-xxxxx
Local license valid from: Not set
Local license valid until: Not set
Activation left 5 of 5

So does this means I or we have 5 out of 5 avtivation left and can't reinstall the game more then 5 time or did i miss something?

you can reinstall the game up to 5 times on different machines