using the left/right arrow keys on the line command to position and edit

[BRIANH]

I am using SecureCRT to remote access to a Linux server from a T42 laptop.
I'm having an issue when attempting to edit a line command.
When I make a typing error, I can't use the left/right arrow keys. I don't know if I'll be able to delete/insert characters on the command line since I haven't gotton that far.

VI presents no issues, the arrow keys work as I'm used to.

Using session options I've attempted to map the left arrow key to:

     Extended combination           function
     
     Extended-VK_LEFT                VT_CURSOR_LEFT
     
This hasn't worked for me. 

Anyone have any ideas?