One sig problem to another..

[MrPaul]

I was just wondering how many other people use Adobe Photoshop 7.0 here? And would anyone be willing to help me, as I'm having trouble getting rid of the crappy white bits that surround text and images when placed on a transparent background? You cant tell on a white background at all (see here ) but on the PSU forums it's not white (duh) so it shows up and makes the whole thing look very cheap. I've tried the different types of Anti-aliasing, and the different transparency dithers, but it's made little, if any difference. I know I could just use a very basic and simple font, but that's not really a solution, more of an avoidance.
The picture (my sig, in fact) that I'm trying to make look "less crap" :

Any help will be much appreciated.