I am about to complete building my second ever computer. My friend has Windows XP and he has made a backup copy for me to use. I intendto install it and use it for a while to ascertain whether it is worth purchasing or not.

I have heard rumours regarding its security. If I install this will there be anything which prevents me from using it? Do I have to register it?

I hope you understand my question as it is alittle vague.

Hope to hear some useful comments from you more experienced people.

Thx. Dan.