Tyhee does not appear on the list of DRS eligible companies recently put up on his site.
It may be possible to get them listed in DRS format, I don't know. I have, however, all my shares of Tyhee in "certificate" form; some of which were done recently. Just ask your broker to get you a certificate for the shares you hold and don't take "no" for an answer.
Computershare is the transfer agent. The shares you hold are yours. They have to give them to you if you ask for them. There is often a $25 or $50 fee for this. The last time my broker did it for free and I paid about $25 to Computershare.
P.