guessing this should work like any other impulse download...
1. install impulse on you internet computer (this may be the big hurdle if you can't get permission)
2. download entrechment
3. right click the icon and select "archive". this will save all the needed gumph into one *.impulse file
4. copy the *.impulse file to your playing machine
5. click the stardock icon in the top left of impulse, select restore archive, select the *.impulse file
6. wait...
you can do this for all your apps and it's a smart thing to do as it save re-downloading everything.
hope that doesn't steer you too far wrong.
MrL