Hey guys, I just got a new Macbook for work. I already own an iMac at home and I am a dot Mac member. I understood that by using .Mac services I could instantly network my two computer and be able to access them anywhere/anytime. I setup both computers to my .Mac membership and have made each of the specific sharing preferences (File Sharing, Printer Sharing, etc) enabled, along with the Back to my Mac settings. The issue that I am having is that when both computers are active and on the internet (but on different networks; iMac on ethernet cable to internet at home, and Macbook on wireless network at work) I am sometimes able to see the opposite one and sometimes not. For instances both my computers are on currently and connected to the internet. But when I open my finder to see my iMac there is no sharing tab and the iMac isn't listed anywhere. On the reverse side on my iMac I cannot see the Macbook either. However, this isn't always the case because almost immediately after I set it all up I was able to access my iMac @ Home briefly. But when I tried to use the Screen sharing button it didn't work and said connection failed. I have no way/access to the work network. It is very much an unsecured network requiring no password to access; much like a wireless network in a Starbucks, etc. Does anyone have any experience in this topic? Can anyone help me out? Thanks.