How can affect the website redesign to my ranking position in Search Engines?

[hotelesenchiapas]

Hi, I have a few questions for you: I’ll will update my booking system and my website design. Now, I'm ranked in number one position with the keyword HOTELES EN CHIAPAS.  In fact, several urls of my webiste appear in the search engines. Internal URLs like this: www.hotelesenchiapas.com.mx/obmp30/hotel/villa_mercedes_palenque/1/es/ My question is:  I need to conserve this link structure or may i change it for something more friendly like this:  www.hotelesenchiapas.com.mx/Palenque/Hoteles/Villa-mercedes-palenque/ And how affect this change to my rank position ?

[lavellester]

Best way to safeguard is to configure 301 redirects from old URL to new URL.

This will let Google know its changed and more importantly conserve the link juice.  More info can be found here:

http://www.seomoz.org/learn-seo/redirection