I found that the easiest method is to go the Automator way. I have several Automator actions that will mount and unmount my shares. I installed the Automator plugin for quicksilver and now all I need to do is invoke quicksilver and launch my actions.

When I get to work I launch "Mount Work Shares" and when I leave for the day I run "Unmount Work Shares". I have similar actions set up for when I get home.

I prefer not to have my shares mount automatically as I don't always need them. I have also set up individual actions for just certain drives - as sometimes I just need one share not all 20 of them.

If you don't always need your shares, it seems that the solution of using aliases might be better for you (see operator207's comment above).