Need ideas on how to create en error log

[nightdesigns]

Since i have a bunch of stuff that's automated, i'd like to create an error log. Something that basically after a script executes (or fails somewhere) it'll add an entry to the log.

I'm looking for ideas on a quick and easy way to do this.

Fields wanted

Add date and time

Current Username

Current Script (is there such an action or do i have to do it manually)

Current Error (i'll have a related DB or error codes)

And what's the best way to do an add?

Relational with a common file?

THanks

-ja