cant take screenshot :( need help bad.

well i know how to take a screen shot its prt sc, for print screen i think, im not sure because i thought it was prt srn, but i press the insert button, and but then i have a delete that says sys rq, which print screen is usually above that im on a cq50-215nr laptop and i cant take a screen shot for my life cause idk how to on it i can on my dell demension 3000 desktop,
also when ever i type in front of a word it backspaces, do i have num lock on? cause i pressed it again and it wouldnt turn off,dangit this laptop has no form of lighting so i cant tell if its on or off, im going to buy a better laptop nextime and checkout the keyboard before i buy it >:|

 

Use Fn + Prt Sc key for Print screen. The secondary keys(the ones printed below inside a box) are controlled by the Fn(function) key.

Alternatively, if you are running Vista you could make use of the Snipping tool to take screenshots.

 

oh thanks, i didnt know i had to press that key also, cause on my dell i dont, but thanks alot it now works and the other option was if i couldnt get help or if i was doomed