Upgrade your version of Inventor, I'm sure your version of LT is much newer the your version of Inventor 5.3, it's close to 10-11 releases old.
m8, don't worry, look at the date of the original question - imagine he's either sorted his mouse or got used to it by now...
I never even looked at the thread date, considereing the time that I responded at, I should have been in bed.
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