Changing temp links

I may have jumped the gun in getting WordPress up and running, because as soon as I got the temporary address (in my case hedgerleynet.temp.powweb.com/greening/) I used it to transfer all my old content from Blogger. Now I have the real address (www.hedgerley.net/greening) which is fine for the home page, but everything else on the site uses the old temp urls, including results from search engines.

I’d be grateful for advice on how I can change all these. Or if I have to re-import from Blogger, how do I avoid overwriting what I have added in WordPress?