You're not really providing much information. These trainers have been out since March 23rd and used by many of our members without any problems. I suggest you read through all the topics here and check the troubleshooting guide.
I have XP sp2, fresh install. No AV to interfere only firewall is XP firewall. Only thing I have installed are drivers and a few games. I download the trainer, run it, load Stalker and it doesn't work. No conformation sounds or anything it just doesn't work. I've tried everything in the troubleshooting guide, tried umpteen different combinations of loading the trainer and game. So if I am retarded and missing something painfully obvious some help would be appreciated.