How to install the "block_with_node_grants.module"

Hi,

thanks for that usefull module. I'm new to drupal and i'm not a coder so my question will be very "basic"...

I don' t understand how to install the core patch.
I read the other issue and understood that :

- if you are on linux you can use "blockcache_alter_with_node_grants.patch" (not my case)
- if you are on windows, you should use "block_with_node_grants.module" (this is my case).

The thing is : i don't know what to do with the file "block_with_node_grants.module" to activate the patch.

Should i add it to the rooth folder blockcache_alter ?

Thanks,
Christophe