help needed MC9090 app development C#

Hi,

Its been almost 6 years since my last application and it is my first time creating something for a mobile device
so sorry in advance if my question is dumb..  :-s

I would like to create an application on a MC9090 scanner.
this applications needs to read and interpred a barcode.

up til here i have no issue.

but the data scanned should now be compared to data in a file on a server.
this file shal be updated via a app on a pc
and all scanners should be using the up to date file.

My idea was to have the scanner
1) at start up of the app check date /time of the server and set  date/time on the device to the same
2) compare date/time of file on scanner to date/time of file on server (in order to find out if download is required)
3) if file on server is newer ==> download the file to the scanner to replace the older version.

But i am completely lost as to how to get started on this.
i tried looking for examples or so on the net and in the EMDK but could not find any.

using :
visual studio 8
EMDK for .Net 2.5
Language : C#