Quick post here… I had the need to log to the SharePoint log files found at C:\Program Files\Common Files\Microsoft Shared\web server extensions\12\LOGS and had a hard time finding the 1 line of code to do it, so I thought I'd blog about it really quick. If you have this need, use something like the following line of code:

catch(Exception myException)
{
Microsoft.Office.Server.Diagnostics.PortalLog.LogString("Exception Occurred: {0} || {1}", myException.Message, myException.StackTrace);
}

Hope this saves someone out there a bit of time searching for this…