umm...well when i try to make a custom shape and i hold shift to make it, none of the imput boxes show up on the tab..also when i try to make my own texture from file it doesnt bring up the box to imput the texture from file. Im using maya 7.0 and i also downloaded the PLE to see if the problem was the software but the same thing happened. is this a problem with my computer or with the software itself?

any help would be greatly appreciated...

thank you