SoftIce For 9x Beginner - HELP

I am trying out a Tutorial To Generate A Serial For Teleport Pro 1.29, It Is Serial Protected.

I Do What The Tutorial Says And Go To Help, then fill in the details for the regsistration.

I am supposed To type a madeup serial in the Ctrl-D To SoftIce,

place a breakpoint on the function GetWindowTextA

So Softice loads up and i type "BPX GetWindowTextA"

Then it says Symbol Not Defined, i dont get what i am supposed to define or even how?

Please Help I Have Never Used Soft ICE Before. Thank You

PiG_DoG