Hi Charlotte,
What I do is to double left click on the time on your toolbar.
( Where you alter the time/date etc on your computer) Date and Time properties
will appear. Click on the time zone TAB. A map will appear. Left click on the " V"
at the sde of the line that says Greenwich Mean Time. A list of all the time zones will appear
with the +/- hours that you need to adjust our time to theirs. Scroll up and down to pick
the nearest time zone to the location you are phoning. This is on Windows XP but should
work on other operating systems.
Tomkin

P.S. and while you are at it, correct your computer clock.... it's wrong