multiple dynamic url convert into static url using .htacess file in php for linux hosting

multiple dynamic url convert into static url using .htacess file in php
for linux hosting

http://kyitseling.org/sysinfotools/viewproductdetail.php?name=BKFRecovery
firstdynamic url
http://kyitseling.org/sysinfotools/viewproductds.php?catname=Backup
Recovery Software
second url
http://kyitseling.org/sysinfotools/Product-buy-now.php?pid=80
third url
http://kyitseling.org/sysinfotools/Buy-Now.php?id=19
fourth url
i want to display all dynamic page like this way
http://kyitseling.org/sysinfotools/Backup Recovery Software
http://kyitseling.org/sysinfotools/BKF%20Recovery
http://kyitseling.org/sysinfotools/80
http://kyitseling.org/sysinfotools/19
in my website.so what code i have to write.htacess file in my .htacess
file in php project .htacess file
my current .htacess code is
RewriteEngine On RewriteRule (.).htm$ viewproducts.php?catname=$1 this
code only work for second url when i am write RewriteRule (.).htm$
viewproductsdetails.php?name=$1 then this case we redirect
viewproductspage only one work so how i rewrite all url .please help
me.........