Formatting IE 8, vs IE6 -- Should the be different?

Hi...  Struggling with moving to Windows 7.  I have RH 8, and inherited a large project.

Project looks great on my XP system, running IE 6.  One my Win 7 system I open the same files (either from product help, or source file on my local drive) and the bulleted list items aren't properly indented from the bullet character.  These are correct on IE 6.

I could probably fix these issues (I hope I can, anyway) -- but what happens with IE6?  Will these fixes for IE 8 break the project for IE 6?

I believe RH has some javascript switches to modify display for different browsers.  Does RH 8 build switches for IE 8?

Thanks for any insights...