You can install without keys and then just run in trial mode for 30 days. Refer to these procedures, if no downloads are available directly. They still might appear MIA, though, since in preparation for the launch of CS6 distribution on Monday servers may be offline for a while.
Kopy-Rite depending on when you purchased your volume license software I have great news you may qualify for an upgrade to Creative Suite 6! Please review Upgrade policy after product announcement - http://helpx.adobe.com/x-productkb/policy-pricing/upgrade-policy-product-announcement.html to see if you qualify.
Also since you purchased a volume license it will be available at https://licensing.adobe.com. You can find additional details regarding utilizing the site at Use the Adobe Volume Licensing site - http://helpx.adobe.com/x-productkb/policy-pricing/volume-licensing-site.html.
Please let me know if you have any additional questions regarding either of these articles.