Changing my site and some urls 301 redirec?

hi all ,
I am going to change the web design of my site and changing some urls, how to change my site carefully without affecting the ranking and pr as well.

Any help?

 

Use a 301 redirect in htaccess to indicate to the SE's that oldpage.html is now newpage.html.

Like so:

redirect 301 /old.htm http://www.domain.com/new.htm

Code (markup):

You can read more about it here:
http://www.tamingthebeast.net/articles3/spiders-301-redirect.htm

 

My site has just pr 2 I don't know if it is necessary to take care for the url, what happend if i don't care of this?
if I change my site without any changing int the htaccess

 

hi mcfox
i have redireted my site from old.com to new.com. Can i install wordpress blog on old.com to by posting articles on it and to get backlinks for my site new.com?? do you think is there any issue in it??

 

In addition to 301 redirects also go into your Google Webmaster Tools (Which we should all have!) and submit your new sitemap.

 

Thank you so much posting such a helpful information. You guys have made my life easy.

 

For more info about 301 redirection techniques and examples in simple manner you can look at this 301 redirect methods article.

 

Thanks mcfox
. I read that i article. Its a very nice article and also good tips in that article.

 

Hi,
That was true,thanks for the information such like this....
keep on posting...

 

Hi,

I am agree with mcfox