hi, I am trying to connect to my homegroup on my main computer, it knows my new Microsoft rt surface is ther but will not allow access. any help please

Does this helps ? 

http://windows.microsoft.com/en-au/windows7/access-files-and-printers-on-other-homegroup-computers

this is good guidance to "Share files on a home network or on your Surface"

https://www.microsoft.com/surface/en-us/support/storage-files-and-folders/share-files-on-a-home-network

• Edited by britishdhez 4 hours 32 minutes ago

this is good guidance to "Share files on a home network or on your Surface"

https://www.microsoft.com/surface/en-us/support/storage-files-and-folders/share-files-on-a-home-network

• Edited by britishdhez Monday, February 16, 2015 7:10 AM
• Proposed as answer by Karen HuMicrosoft contingent staff, Moderator 6 hours 25 minutes ago