It's a bit elusive. Google it and see what you can come up with. You might check the country sections in your Jepps. I know that there is a page in the China section regarding their Feet to Meters conversion and preferred Metric flight levels per direction of flight. I did not see anything like that for the CIS.
Now if you were flying a -400 all you would have to do is toggle a switch from what I hear!
PM with a fax number and I will send you a Metric Quick Reference card that we use in our ops. I'll be in the office for another two hours, otherwise you will have to wait until Thurs. if you still want it.