[Weasel]

Here's the idea very simply:

• When a player joins the game,
• Lookup in a configuration file (NOT a database), to see if their SteamID is listed.
• If their SteamID is listed, run the command included in the configuration file.
• Execute that command on the server.
• Would be nice to be able to optionally use some escape parameter like the SteamID in question in the command.

Obviously, this allows for lots possibilities.
but, this is not intended to work with some huge list of players, and NOT require a database.
Basically, the configuration file is some kind of small table - just two "columns" SteamID and what command to run, like this:

SomeSteamID1	whatever command to run for SomeSteamID1
SomeSteamID2	whatever command to run for SomeSteamID2
SomeSteamID3	whatever command to run for SomeSteamID3
SomeSteamID4	sm_say "Warning: %SteamID% is a known trouble-maker, and also an Admin!"