WINDOWS System time changer

Avg Bid (USD)
Project Budget (USD)
$30 - $250

Project Description:
I need a trivial little app that will change the system date at specified time moving it forward. Then after specified time it will move back again by the same amount of time.

- Inputs (driven from user interface (preferably) or text file)
o Time at which system time will be moved forward
o Amount of time (in minutes) the system time need to be moved forward Time at which system time will be moved backward
- Application must be stable and working on operating WINDOWS SYSTEMS: XP/7/8/SERVER 2008R2/SERVER 2012

I guess inputs loaded from the text file is the easiest option, and therefore cheaper. Please let me know what would be price difference between two solutions (inputs from user interface vs. text file.

Skills required:
C Programming, C# Programming, Java
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