iPhone grey line

[sladester]

I have an original iPhone.
A few days ago, I noticed the slightest grey line on the bottom of the screen. I've had stuck pixels before, but not a grey line like this.
I have tried the flashing colors trick, but to no avail.
Any suggestions on how to fix it?
Or any place here in the US I can get it fixed cheap?

 

[ngenerator]

Does it show up on the image when you do a screenshot (home+power buttons) and transfer over to a computer or email?

If not, then it sounds like it may be a pixel issue. If you're near an Apple store, I'd call and get an appointment set up, as they may need to replace something in there (but it may cost a little $)