systener hook,found by AVG??

I have the same thing on my computer, the sysenter hook. However, my comp will not let me download anything. Can anyone tell me how to turn off what is needed to download some clean up software or just help? Please and I thank you so very much! I have AVG also...

via Bleeping Computer Last 20 Posts http://www.bleepingcomputer.com/forums/t/510289/systener-hookfound-by-avg/