Indexing Problems

I'm using Omeka 2.3, inside XAMPP insdide windows 7.
When i attempt to index records from Settings > Search it shows me this error:

Omeka has encountered an error
The configured PHP Path () is invalid

I know that i should configure the php-cli in the application/config/config.ini but i am not figuring out how to.
Any idea how can i overcome this problem?

The path to php might differ from installation to installation. It sounds like digging that up is the real issue? It's often something like C:/xampp/php or E:/xampp/php, but not necessarily. So it might just be finding where xampp was installed on your machine, then putting that in the config.ini file.

Thx Patrickmj
It worked