redirect using htacess

Hi everybody
Well i hope other can help me on this.I import my site from blogger to wordpress.So my url structure will be like this

/%year%/%monthnum%/%postname%.html

Code (markup):

I want to change it to

/watch/%postname%/

Code (markup):

I can do it on "Customize Permalink Structure" option.But problem is on my page still link to old url.Is there any way use htacess to redirect all old url to new url ?
Thanks in advance

 

The permalink does not work in the way your are using it... what is watch in your url?

 

I just found solution yesterday.I also post here if anyone need late.Thanks for reply darktangent1
You just need add this code on your htaccess