I have some old sites which are .asp pages, they do not display the page in Chrome only the code is displayed - any ideas on how to get .asp to display or should I re-write?
There is no instant remedy to this problem. They do not display properly in Chrome because they were never tested in a webkit browser (eg Chrome, safari) when they were initially built. This does not mean they need to be re-written, but you should definitely go back and fix any issues and re-test in those browsers until you are satisfied.
I'm sure the ASP community is large enough to answer your question but I'd rather consider converting the website to a wordpress powered site. Refreshing it never hurts. And I can do that for you if you need assistance.