Anyway, aliases just open the actual app. If I was to put an alias of safari in the dock (which CAN be done without admin passwords, you can do the copy-paste method), When you click on it it just brings up the normal safari icon (I think, I'll check once I boot up 10.5...currently working on classic.)
EDIT: I take It all back, the alias trick works a treat! thanks people, I owe you one!
EDIT: Is there any way of removing the alias arrow??