ReadAllText and Encoding?

Question

I am trying to parse a file using ReadAllText.  The log file has a summary section and then an array of data.  The file is not in standard AISCII.  Am I using the correct method and do I just need to find the correct character encoding or am I missing something?  Is there an free/share application that can load the file with different encoding to see which one is correct? 

The file looks like when I open it in Wordpad:

���6 mi steady+���WarmUp 1.00 mi

Run 4 mi 50-80%

Recover 1 mié��°R����

���M
��À•\&Uþÿ�'�.
2�7*UþÿQ�}-�†M�ˆl�Œ�•¬�—Í�˜î�˜
™.
˜O
—n
–
"¯
’Ð
ñ
’3•U•v"—’¸×’õ’‡)Hh’ˆ’©"Ê"ë—

˜+›Lžl›¯—Ð’ñŒ1’P˜o˜›¯œÎší™

(... for a 300 k file)

I can attach/send the complete file if it would help.

Thanks.

Mark