
Shut down the Windows XP Security Center by going to Control Panel / Administrative Tools / Services. On the right side panel, scroll down to Security Center and double click to open. In the "Startup type" field, choose "Disabled". Click OK, and exit Services.
Now, to stop these annoying
Security warnings every time you run a file, just open Group Policy. (Start / Run / gpedit.msc)
Then go to User Configuration > Administrative Templates > Windows Components >
Attachment Manager- then set -Inclusion list for low file types- to
Enabled and enter the file types you don't want to be warned about in
the box (for example: .zip;.rar;.nfo;.txt;.exe;.bat; .com;.cmd;.reg;.msi;.htm;.html;.gif;.bmp;.jpg;.avi ;.mpg;.mpeg;.mov;.mp3;.m3u;.wav; ).