I've seen screen shots with the active indicator on the dock changed. Can anyone tell me how to do that and where i can get several indication icons? Thanks.

I use the application "CandyBar" [CandyBar] (not free) to change my dock/icons/indicators
I've also heard of people using a similar free application "Liteicon" [Liteicon]. I've never used it but there's more info on the website.
Hope this answers your question.

Where do I get different dock icons for CandyBar?

google "dock icons" or something similar...they are all over the place... people actually spend time making these so don't just be a leech.
off the top of my head: guistyles, iconarchive, interfacelift

They include active indicator icons?

Can I get an active indicator like the one in these screen shot? http://forum.insanelymac.com/index.php?act...st&id=24396
http://hawkboom.ha.funpic.de/screen24.jpg

Any one?

Like he said, use Candybar to change the theme.

Here is a link to the indicators in a candybar package.

http://macthemes2.net/forum/viewtopic.php?id=16784360

the download includes all the colors.

enjoy =]