Restricting number of post display per page (first page) on wordpress

Well i run a wordpress blog and i whant to know how can i restrict the number of posts per page showen .... i don't know how to do....

Regards and thanks

 

Admin Area--->Opinion--->Reading--->Edit the amount in the box besides "Show at most"

 

by doing it from admin options, it limit the number of post in every page(main,category,monthly archive etc)
if you want to put a limit on home only then

Place this script on the template(index.php) for home, just above the starting loop "<?php if(have_post) ?> "

<?php if(is_home()) 
    query_posts("showposts=[COLOR="Blue"]5[/COLOR]"); ?>

Code (markup):

This will limit the posts to 5 on only home page.

 

thanks Richie and Nani

 

Thanks i've restricted to 5 posts.
Regards

 

w3bmaster, after you settle with that you can do even more with Custom Query String Plugin

 

downloaded that, will test it tonight