So I'm just gonna try to cover both of your posts at once... As for simply tracing; say 'traceroute 00.00.00.00'; the most that will show up is essentially an echo request, and this will only be seen, if the person is actually logging net traffic. As for a geoip lookup, that will not be seen by the person.
As for cloaking your IP address; well the best way to do that outside of using say TOR, or a proxie; iptables, in the nat chain, you can spoof your ip that way as well... Truthfully I haven't done that in a while, so the exact commands necessary eludes me at the present moment. However, I am currently writing a tutorial for iptables; it's needed for training curriculum for my company, and I had already planned on putting it up later here at EZ. Although for windows, you're choices are a bit limited; wherein TOR or a proxie, is pretty much the best your're gonna get; without using an additional system...
I didn't notice your third post till now... Use avast; avast.com; this is one of the best anti-virus systems available, and it is free, and it actively scans pretty much everything... However, no anti-virus system is fool proof, and there are techniques that can make it next to impossible for an A/V to pickup... The best way to make sure what you're downloading is safe; is to know where you're going, and what you're getting...
