You want to archive the SQL Server log files for a database, or the error and sql agent logs? The log files aren't "archivable" per se, but you can perform log backups, etc. Is that what you are looking for?
If it's the error and SQL Agent logs, you will need to write something for that. It would just be a matter of monitoring the directories and copying files as they roll over, or as you reach certain time thresholds. Why wouldn't you just use a backup program though?
Derrick Leggett
Mean Old DBA
When life gives you a lemon, fire the DBA.