Codeigniter Query Strings URL Issue

I have already setup project having it's url like below.

index.php?c=controllerName&m=methodName

And parameter in above url like below.

index.php?c=controllerName&m=methodName&selDeg=manager

I want to use url like below for my newely created modules.

admin/Items/1

But want to use first type url as it is for previousely developed modules.

Is it possible to use url with index.php for old modules and without index.php for new modules.

Thanks in advanced.

from Codeigniter Query Strings URL Issue