This excerpt taken from the CUK DEF 14A filed Mar 2, 2009.
If your shares are held in a stock brokerage account or by a bank or other nominee, you are considered the beneficial owner of shares held in street name, and the notice of Internet availability of proxy materials or set of printed proxy materials, as applicable, is being forwarded to you by your broker or nominee who is considered, with respect to those shares, the shareholder of record. As the beneficial owner, you have the right to direct your broker on how to vote and are also invited to attend the meeting. However, since you are not the shareholder of record, you may not vote these shares in person at the meeting. If you request a paper copy of the proxy materials as indicated in the notice, your broker or nominee will provide a voting instruction card for you to use.
Even if you plan to attend the annual meeting, we recommend that you also submit your proxy as described below so that your vote will be counted if you later decide not to attend the meeting. Shares held in street name may be voted in person by you only if you obtain a signed proxy from the record holder giving you the right to vote the shares. Please refer to the voting instructions provided by your broker or nominee.
If you hold your shares through a stockbroker or other nominee, you will need to provide proof of ownership by bringing either a copy of the voting instruction card provided by your broker or a copy of a brokerage statement showing your share ownership as of February 17, 2009 together with proof of identification. Cameras, recording devices and other electronic devices will not be permitted at the meeting.