I searched hex editor here and people said "use one with tlb support" and didn't mention a specific text editor.
EDIT: Scratch that, someone pointed me to here: romhacking.net/utils/291/
*sigh* can't wait till I have 15 posts...
As for your question, They meant one with '.tbl' support, like Translhextion 1.6
or Thingy 32 or Hex Workshop, etc.
And for your first question, don't ask it anymore, ok.