usb printer-cups problem

[Pedro Regis]

anyone help me with command to see my modules are loaded,I try shell window 
but I did not to get  result.
> First of all you'll need to make sure the modules are loaded.  Do this:
>
> lsmod
>
> You want to see at least these two loaded:
>
> usb-core
> printer
>
> If you don't see them then you need to install the modules like so:
>
> sudo modprobe printer
>
> That should installl both modules.  Then do lsmod again- it should have
> loaded both usb-core and printer.  If they are there then restart cups and
> try this:
>
> cat nameoftextfile > /dev/usb/lp0
>
> Also open up a browser and enter this url:
>
> http://localhost:631
>
> What brand name and model of printer is it?  There may be drivers for it.