Network File /Printer sharing Windows XP.

I am a newbie to this so please excuse my question if the answer is obvious.
I am running Linux Mint on my machine which is networked to the host which is running Windows XP.
I used to have Avast internet security installed - this allowed full internet exchange with printer / file sharing thro’ samba.
I have now installed Commodo with firewall etc - I have internet exchange but NO file / printer sharing. My Windows firewall is disabled, and the error message in My Linux machine says that samba share cannot be found.
Any assistance would be welcome.

Did you make your local network a trusted network in CIS?

I am pretty sure that the answer is YES - but just to be sure could you point me in the right direction to check this out.

To make your local network trusted:
Go to Firewall → Common Tasks → My Network zones. See if you have a network detected by Comodo which shows something like: IP In 192.168.1.x/ Give it a name like My Local Network. Select the network → Add → A New Address → now add the following addresses:

When there is no network defined like that we will create one. Click Add → A New network zone → give it a name My Local Network → Ok.
Now select the network → Add → A New Address → now add the following addresses:
192.168.1.x/ (use “An IP address mask”; fill in the IP address of your computer)

Open the Stealth Ports Wizard under Firewall → Common Tasks. Choose “Define a new trusted network stealth my ports to EVERYONE else” → Next → choose “I would like to trust an existing My Network Zone” → from the drop down Zone Name choose My Local Network → Finish.

Just to say thank you - followed suggestion 1 and now we are up an running