http://lmgtfy.com/?q=How+do+I+trans+an+image+in+gimp
Here Follow this Step open the image, you want to work onadding alpha channel (transparent layer) by CLICKING menu > LAYER > TRANSPARENCY > ADD ALPHA CHANNELselect the fuzzy selector - and with it, click & select the area you want to removeclick & select the area you want to removenow let's clear the area, by CLICKING menu EDIT > CLEAR (CTRL + K)now your image has transparent background and is possible to save in a transparent capable format, like GIF or PNG
Eraser or select and then press delete on your computerYou are nominated for most unhelpful person and complete asshat of the day.
Layer > Transparency > Add Alpha Channel > EraseIf you're trying to create a transparent animated gif, stop now. Gimp can't do those.
It's not the first link.