I would say I have a fairly good knowledge of networks so I was a little confused when started having what I thought were network issues. I use the same logon and password on my laptop, desktop and server in a workgroup so I can access the partitions on each freely using administrative shares i.e. \\pulsar\c$ but having installed 7 on my desktop pc these shares simply stopped working. I initally blamed DHCP and DNS caches but other services were working fine, such as Norton Discover and Remote Desktop. I drilled down and eventually discovered that Homegroups had infact taken over and stopped the other shares working. All my shares are on a server and I am quite happy with them being seperate, so I decided to disable this functionality by doing the following: So open up the Network and Sharing center and over the on the right you will see 'Change advanced sharing settings' Down the bottom you will find the option you need. I am sure this is a great new feature for those not so network-savvy but not one I need for sure, but having access to all your music, videos and photos from all your networked Windows 7 machines is definately a great feature if you wouldn't know how to do it otherwise.