Mounting a drive from another Linux machine

[Shaggy Im-erbtham]

Could somebody please explain or point to the right direction?

Two Linux machines are connected (UTP and hub) and can ping one another.
How can I mount (otherwise access) the hard- and/or CDROM-drive of computer
 A on computer  B? I am using Slackware 3.5 and not using X for this purpose.

TIA,
Shaggy
Bangkok, Thailand