Texmod Help

I have recently downloaded Texmod and have followed the tutorial here http://wiki.guildwars.com/wiki/Guide...Creating_a_mod to the letter, but im stuck on step 6. When I press run, the game starts up, but when I try to hit + or - the game thinks im trying to use it as an actual command. I logged onto my paragon but cannot select the spear texture im trying to mod or any texture for that matter. How can I select textures? I have tried re-downloading texmod, but to no luck. Any help will be appreciated.

You need to use the Numpad +/-s, if you're on a laptop, that usually needs you to hit Numlock beforehand.