check your cogs with multi currency module!

I've made a grave mistake in not doing this sooner- I checked my COGs accounts. Most of our vendors are in Germany, thus we get our bills in EUR. In the COG's account, I see that sometime in  the first quarter 07, it no longer enters a rough approximation of the dollar amount of that item. If i look at entries before this time, it's fine, and it's certainly a rough approximation of the cost of the item in dollar amounts. From 03/2007  until now it it has been entering exact euro amounts. Obviously when I go to pay this, that 100 eur item really costs me 160 today. Maybe at the time of bill entry/ or receipt it was 1.55, but regardless the cogs accounts DO NOT reflect this like it used to. My cogs accounts are thus $120,000 or more off, THAT'S FLIPPING SCARY!:eek: