IE6 Compliant menu advice please

Hi,

I’ve been tasked with creating a rounded tabbed navigation that is compatible with modern browsers and IE6.

It needs to have transparency as the background colour is going to be variable so I have used PNGS.

I have gone down the sliding-doors CSS method using a list. It works perfectly in all browsers except obviously IE6.

As your are all aware, IE6 and lower doesn’t support PNG transparency. I have tried various hacks to try and get pngs to display with alpha transaprency in IE6 but to no avail as they ended breaking the menu.

So what I would like to know is, what methods do you peeps use?

Should I just cut my losses and use GIFS? I’m loathe to do this as they lose quality and need the menu to look pretty much indentical in all browsers.

Thanks