Can't update site

[Nessie]

I have tried to update my site and get the following message:

An error occurred when trying to connect to the server. This can happen when the server is unreachable or you have set up an SSL server, but this server can not accept SSL connections, or Windows is confused about proxy settings. If you have Internet Explorer or another application configured to work with a proxy, the settings should be the same for Actinic Ecommerce. Please check your connection first.

I am not very technical and do not know how to check the settings etc, can anyone help?

[leehack]

Have a read of this and see what you can answer to help us to help you - http://community.actinic.com/showthread.php?t=45650