[noob] How to view log files

[eluser]Unknown[/eluser]
I have inherited a basket case that was written using CI. I'm trying to come up to speed on CI as quickly as possible. Currently struggling with a timezone issue and trying to log activity.

I have inserted the log_message() and the logs are being written to the ci_system/Logs folder into files named Log-YYYY-MM-DD.php If I ftp the log files down and open them with a text editor they are all but unusable <unreadable no whitespace, no newlines>.

How am I supposed to view the log files?

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Since they are .php files and there is a BASEURL check at the beginning, my assumption is there is a way to access them through the CI framework using some URL. I can't find any references in the wiki, the user guide or the forums.

Thanks in advance.