Can someone help upgrade my CMS to the latest version?

[JohnnyB]

How much will really depend upon the current version, the number of modules that also have to be upgraded or migrated to something else that will be compatible, any custom user defined tags, and other functionality that may need to be modified. I set up a development installation of the current site, in a different directory and upgrade from there first before going live with it. It could take as quick as 30 minutes or several hours depending upon the work involved...