Should we use Web services to develop this integrated application?

We are developing an integrated application that will incorporate excel application, access databases and pda applications using visual basic 2005. Problem is whether to use web services to develop the project. This request for help was originally submitted to the Research Assistant on WhatIs.com.

ResearchAssistant855 pointsBadges:

Merge Replication with express versions

I am trying to do a merge replication with about 10 pda's and a desktop i do not want to use full blown ms sql due to cost, anyone any alternatives PDA's are running Mobile 6 and sql compact IF need be will change from MS sql to other

ChrispInk5 pointsBadges: