you could set up remote desktop for the clients sites using terminal services. or use pcanywhere which can use phone number or internet connection.
~M

>We are a small company & have been using Ultra VNC for customer support. But, it is very slow.
>
>Is there some other software or service for this?
>
>I already checked www.skyfexfree.com which only lets you view & logmein.com which is suitable for biiger clients with DSL connection.