Thanks for your replies! No worries, QPS this tool was worth every penny since it helped me solve various other networking issues. Also, I hope that your girlfriend gets well again soon!
As for re-installing my Windows, I decided against it for two practical reasons: First, I will leave Europe for good in July and when I return to the US I will have alot of things to do, rendering gaming impossible for a year or maybe even longer. Secondly, getting my PC shipped would be more expensive than the PC's current value itself
. After this hiatus, I will buy a new one that can easily run FH2 and ARMA II.. But the idea is very good indeed. Such an old installation of Windows truly does more harm than good. What I am thinking of though, is to buy a disc version of BF2 and to replace my current EA-download with it. I am confident that this might help.