I would like to know if what I am thinking is possible and, if so how to set it up. I have a Compaq Workstation that I have loaded on it VMWare ESX 3.5 and FreeBSD. I have successfully edited the grub menu.lst file to boot into either, but i would like to select my choice from another machine running Win7 using Putty ( Since I only have one monitor and keyboard!

Once my workstation loads the grub, presenting the options of OS's, is there a way using putty or some other software GUI on my Win7 machine to see that grub menu and then select which OS the workstation should boot into? ( ESX 3.5 or FreeBSD - This would come in handy so I dont have to disconnect my monitor, keyboard and mouse each time just to select the desired OS!!!)

I know of no way.

The only way I know of would be to magic packet it boot to pxe. Choosing beforehand the default.cfg file you want.