you don't need any special software to edit/create an icon, just use windows paint. but make sure that it is 16x16 and that you save it as an .ico file.
theEclipse
eclipse_web@hotmail.com
robacarp.webjump.com
**-Trying to build a documentation of a Javascript DOM, crossbrowser, of course. E-mail me if you know of any little known events and/or methods, etc.