phranque - 9:40 am on Apr 15, 2012 (gmt 0)

welcome to WebmasterWorld, ablu272!

i would not use any form of robots exclusion protocol on those urls and allow them to be crawled and the 301s indexed.

the only response you need to return for those old site page requests is a 301 status code and a Location: header with the canonical url of the replacement page.
or a 410 status code if the old page no longer exists.

301 Moved Permanently:
http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.3.2
Location:
http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.30
410 Gone:
http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.4.11