I want to see how well i can protect my computer (i have two) and basically i want to know a simple non-harmfull hack or proof i can by-pass to check security. I obviously have full access to my own ip address so any help or links would be nice. and if i could do in a command prompt like power shell tell me please and thanks ahead of time

some tips on securing your workstations:

apply a decent firewall
install a good virus scanner
always keep you os/system up to date with fixpacks
use you common sense! dont open untrusted emails/websites
if you have wireless, use WPA2 with a good password

there are tons more of security measures you can take, but you will see that these are pretty much sufficient to keep the bad guys out or atleast let them move on to easier targets.

after this follow the instructions from Kris, and you will see that your security is just fine...

All great advice. Whilst focusing on the security of your desktop is  important, I would also take a look at the security of your router if you are sitting behind one with your two machines. Using a site such as AuditMyPc will give you an indication of how visible your pc is to the internet. You should also scan it for any unchecked open ports that may be exploited by automatic scanners (ssh, ftp) etc.

You also asked for a simple check to determine the security . I would consider using some simple Man-in-the-middle attacks between the two PCs and see if you can obtain any information through that. Using some simple bruteforcers against the web interface of your router is also another simple check, as is some Wifi testing  against your WEP/WPA security

Any questions, just shout

n1p

A bit more description of what you are trying to achieve and your setup would help. Also ensure you terminal services server is accessible by you..

if you have the 2 boxes on their own private network and no other computers on it, get Hacking for Dummies. Read it, and play with the two boxes as you go through the book. Set one up as a testing box, and the other the victim.

LanGuard has a free for 5 ip address version right now. I had some strange experiences with it though, but that could because I have to wait for the trial license to run out.

Happy Pentesting

As long as we went off on wireless...

Lack of SSID broadcast will only take you so far, anyway.  Yeah, it's a mentality, as j0rdy said, of 'security through obscurity,' and ultimately, if you're going to be hit by a hacker, stopping broadcast will only give you a moment of security, as if an attacker is using good tools, the first time your client connects to the AP, they're GOING to have your SSID, anyway.

Wireless security really needs to include WPA2, MAC filtering, time and access permission configuration, and if you really want to be 'safe,' you should be using some sort of VPN or client auth mechanism in addition to the wireless.  Wireless, in and of itself, can only be secured so far (WPA2 is a pretty good start,) so putting that extra gateway / VPN behind the wireless router will add that extra layer of 'OOMPF' behind it all.