Finally i got it working. I had to do the following:
1- Hotas unplugged
2- Install 2007_HCO_VISTA_64_RC1 drivers (the Windows Vista 64 bits version)
3- Plugged the hotas when asket to.
4- Got the DATA IN adn DATA OUT driver problem as mentioned on the first post.
5- Went to START -> CONTROL PANEL -> VIEW DEVICES AND PRINTERS
6- Right click on THRUSTMASTER HOTAS COUGAR and select PROPERTIES
7- Go to HARDWARE, select DATA IN and click PROPERTIES
8- Go to DRIVER IN and click un UPDATE DRIVER button
9- Select BROWSE MY COMPUTER FOR DRIVER SOFTWARE
10- Go to "C:\Program Files (x86)\HOTAS" using the BROWSE button and click NEXT
11- Windows finds the DATA IN drivers
12- Repeat step 8 to 11 but with DRIVER OUT.
13- Done, now the DRIVER IN and DRIVER OUT are installed and working properly, no more "hardware problem" with the Cougar and everythiong working fine, including Foxy.