Hi gtaillandier,

Trojan-Gen is often a sign of adware/spyware crap: run some specialist scanners:

AVG Anti-Spyware (Requires Win2k/XP):

http://www.ewido.net/en/

a-Squared Free:

http://www.emsisoft.com/en/software/free/

Ad-Aware:

http://www.download.com/3000-2144-10045910.html

Spybot Search & Destroy:

http://www.safer-networking.org/en/download/index.html