9
Havent switched to IE7 yet.
Most people I know are still using 6 but Im sure its a matter of time.
If you do valid css...it will work in Firefox and in Most cases IE. That will be even easier now with IE7.
The major differences will ocur when you have IE specific css hacks...(which is a no no now, you should't be doing them).
There are some fixes that dont act like hacks but are specific to the browser.
Such as the display:inline property.
(try throwing it in when you get a whacky spacing issue in a floated element in IE. for instance.)
Anyways Im super happy that IE is progressing.
The worst was IE 5....and occassionaly I get stuck in IE 6..but its usually ultimately a result of invalid systax somewhere....
NOW....
When we are up to CSS 3...the fun stuff is really going to happen!
We are Working on a css theme for XOOPS at the moment..