Almost impossible to find out how to do this! Finally with a mash up of a few articles, I found out how to automount samba drives. Yeeeah haa. Means i can mount //calculus/data and //nestor/data with different names (to stop confusing front row :-))

(NetInfo app --> found in ya utilities folder under applications)

The important bit is the path the mount is created under -- '/Network/calculus' will mount it with the name 'calculus' (if I had /Network/joebloggs, the drive would be called 'joeblogs'), ja?. This is doing a 'static' mount, which means it's mounted all the time (dynamic mounts unsuprisingly get turned on/off depending if they are in use). The drive is then in the finder under 'Network' --> drop an alias wherever ya want and bob's your uncle :-)

Not sure what will happen when someone else logs onto this box... do they still get mounted? And using my username/pass? hmm will have to try it out and see.

Edit: Found a post on macosxhints that may be even easier -- using an applescript and automator. Not sure if it will handle 'remounting' when an automount fails (as the netInfo way above only runs at boot - I haven't found a way of 'remounting' the netInfo mounts if it fails at boot). But one bonus is it's user specific, so doesn't set up those mounts for everyone.
http://www.macosxhints.com/article.php?story=20070202190047133

Edit: I've done a followup on another method here: http://rachmobile.blogspot.com/2007/10/more-automounting-samba-drives-in-os-x.html

NOTE: this method only works on 10.4 (Tiger). Leopard has some other funky methods to get it up and running, and the NetInfo manager has ben removed. New methods include autofs which I must try out some day soon!