Dear Sir/Madam, This is Yinghui Zhang from Massachusetts General Hospital. I am a postdoc here and my project requires me to use the Chimera often. However, the desktop I used is some old and I can not update and use Chimera right now. The Chimera installed is 1.2 version but cannot be started. The specifics of computer is as follows: Apple PowerMac G5 chip, duo core and 3G memory. The OS is Mac OX 10.4.11. The operating system very probably cannot be updated because of chip version problem. Could you please give us some information if there is some alternative we can install executable Chimera on this computer? Thank you very much! Yinghui Zhang EDR 514, Dept. of Anesthesia MGH Boston, MA 02148 The information in this e-mail is intended only for the person to whom it is addressed. If you believe this e-mail was sent to you in error and the e-mail contains patient information, please contact the Partners Compliance HelpLine at http://www.partners.org/complianceline . If the e-mail was sent to you in error but does not contain patient information, please contact the sender and properly dispose of the e-mail.