Redirects question

[Jon12345]

I have a static website that I wish to change to a dynamic one. Consequently, the urls are going to change for each page. As I understand it, this will result in the new pages being sandboxed.

Is there anything I can do to avoid this? What about 301 redirects or whatever they are called? If I use one of these for each page, do I have to do them immediately? How long does Google give before consigning your page to the rubbish heap?

Thanks,

Jon

[goodroi]

Dynamic pages do not you have to have ugly urls. You can use mod_rewrite to turn the dynamic pages into nice crawlable urls that match your existing static page urls (assuming you are matching 1 for 1 with your new and old pages). This will make the spiders happy.

[Jon12345]

I will be using Joomla CMS system so won't be able to do exact matches, alas.