documenting during pentest

[lists at arnaudloos.com (Arnaud)]

I just completed my first hacker challenge and was surprised by the fact
that my biggest obstacle was keeping track of the various
systems/ports/services/vulns that I identified. With no coherent strategy
for keeping track of what systems and services I had already targeted I
quickly lost track of where I had been and what I had done. What strategy or
software do others use to keep track of such things?

Thanks.
Arnaud-