Problem accessing Win 7 shares

[nabby1212]

Hey folks, I am having difficulty accessing my Win 7 PC on my home network. I was able to see the Windows machine on the network until I changed my router setting - specifically I have shared the gateway's address with the Ubuntu tower and ever since I can not "see" Windows share list. I've done the sharing of address for SSH purposes(I'm far from any kind of guru) and now when I click on Network all I see is the Ubuntu box! I have had this for a week or so and decided to post this under networking after a while because I didn't think it was either of the PC's...

Any ideas to guide me in the right direction are very appreciated!