Search engine localisation

[waziwazo]

My website is at the #2 spot for main keyword on msn.com and msn.ca "english", but when i try a search on msn.ca "french" or msn.fr i cant find my site.

My website is in french language and my prymary target are french speacking peoples. I am wondering if i should add this code in my webpage :

<meta http-equiv="Content-Language" content="fr-CA">

I would like a better ranking on french search engines, but i do not want to lost it on msn.com since these visitors are welcome too.

[Receptional]

What country is your web host in, and what TLD is your site?

[waziwazo]

My website is hosted in USA and it have a .com domain name

Since my website is hosted there with the same web adress since nearly 10 years, i dont want to change anything that would affect my ranking on others search engines, i am ranked #1 on google.ca "french" an #1 on cf.yahoo.com (french Canadian yahoo)