I just need one quick answer please, as to whether or not I can do this in GIMP.

It's to make an effect like in this image, with the lines going across it. Not necessarily going diagonally, but the lines themselves...I'd like to know how also please, if it's possible. Also, is there a special name for that effect or something? I like it

Oh, yea..this is the image [a brawl sig]:

 

Awh..so it can't be done anymore? Or you just don't know how to access the thingamajig that does it?
Mehh...this is another time I wish I had photoshop :'[

Darn it being so pricey.

 

I believe you can do it using a transparent layer of the image with the diagonal lines..

 

scanlines they are called, you should be able to find some brushes or something for them =D

 

Hard for me to describe this but:
1. in photoshop make a new layer
2. make an 2x2 pixel white square
3. draw a black line at the bottom of the square
4. select the square but pressing ctrl (I think, could be alt) on the layer in the layer pallette
5. in the main menu bar go Edit>Define Pattern and then hit enter
6. fill that layer with white
7. use the fill tool (the bucket), change the fill from foreground to pattern, and select your pattern
8. use the bucket on the white layer
9. change the layer to multiply or screen (whatever your want)