I have a VS, and there are arms that hold the boot and act as a hinge, plus on each of these arms there's a hydrolic gas support thing to stop it falling down when raised up. Is this the type you mean?
These hydrolic supports have a C shaped clip over each end which hold on around a ball shaped knob. You can lift each clip up with a flat-head screw driver (not all the way off unless you want to make things more fun and try and refit the tough little buggers). You just need to slide your flathead screwdriver in under the clip through the groove, and this makes enough space between the clip ends for the support arm to fit over the holding balls on each end. I found a gentle tap away from the support will remove the old one, and a similar knock back in the other direction will put the new one back in place. Then you remove the screwdriver and that releases the clip.
Otherwise if you have the old-style spring type supports then maybe one of the other guys here knows how they work...
Jazza