OK, I've ran into the same problem. My artist sent me some text and when drawn at non-integer coords, OR when scaled it looks crap (see the black outline on the tops or sides of letters).
Take a look:

Here's the code:
Here's how I drew the 4 images:
1) (top left) integer coords
2) (top right) fractional Y coord
3) (bottom left) fractional X coord
4) (bottom right) integer coords but scaled to 1.5 in Y. Notice how the uglyness is really obvious!
As sswift says, turning off filtered image sorts it out but the scale ones loop rubbish (blocky)
I'm gonna have to check out this defringe thing now.
Take a look:

Here's the code:
Strict Graphics 600,400 Local image:TImage=LoadImage("play.png") SetClsColor 200,200,200 Cls SetBlend AlphaBlend DrawImage image,10,10 DrawImage image,300,10.5 DrawImage image,10.5,200 SetScale 1,1.5 DrawImage image,300,200 Flip While Not KeyHit(KEY_ESCAPE) Wend
Here's how I drew the 4 images:
1) (top left) integer coords
2) (top right) fractional Y coord
3) (bottom left) fractional X coord
4) (bottom right) integer coords but scaled to 1.5 in Y. Notice how the uglyness is really obvious!
As sswift says, turning off filtered image sorts it out but the scale ones loop rubbish (blocky)
I'm gonna have to check out this defringe thing now.