Show Central Time using FormCalc

I am located in the Eastern Time Zone but I want to display central time on my form. Using FormCalc I have inputed this code in layout:ready 

$.rawValue = Concat (Num2Date(Date(), "EEEE MMM DD YYYY",  "de_EN"), "   ",  Num2Time(Time(), " HH:MM:SS "), "  ", "CST")

The "CST" just prints out CST but does not convert the local eastern time to central standard time. The output right now prints out: "Friday Feb 24 2012  11:58:12 CST".  This is exactly what I want to display except I need the time an hour back so it will show the real CST time. Do you guys have the code that would do that for me?