ISO Week Numbers

I am also using the following formula to return the date in Cell BE1:
=TODAY()

I am using the following formula to give me the ISO week number in Excel in Cell BE2:
=1+INT((BE1-DATE(YEAR(BE1+4-WEEKDAY(BE1,2)),1,5)+WEEKDAY(DATE(YEAR(BE1+4-WEEKDAY(BE1,2)),1,4),2))/7)

and the year in Cell BG2:
=YEAR(BE1)

I then use the following to give me the wk and year in this format "wk-yr", i.e "6-09" in Cell BF4.
=CONCATENATE(BE2,"-",RIGHT(BG2,2))

My question (finally) is that I am using this in a sheet that tracks issues that have deadlines. I manually enter in the dealine in the format "wk-yr". I have conditional formating that then colours a cell amber if it equals the current week and year, which is given in Cell BF4.

I want to use a traffic light system that will flag all issues in the weeks before the current week red, and the weeks after the current week in green, i.e. red = late!! I can't get my head round how I use a formual in teh conditional formating to correctly identify the relevent weeks? Any one any ideas? I could have the following situation for example (assuming that the current week is wk6 2009) and the formating should apply the colours as per my brackets:

10-08 (RED)
5-09 (RED)
6-09 (AMBER)
6-09 (AMBER)
7-09 (GREEN)
10-09 (GREEN)
6-09 (GREEN)
2-09 (RED)