hi... i am not very technically minded and have just had something bad happen to my computer... i have a G3? mac laptop... it's a titanium finish one, and i run OSX and safari. i was looking at some websites on the net and i went to one that was something to do with making handbags... when i hit the link to go to it, nothing happened and then my computer screen had all these vertical lines on it and then went totally blank! i shut down and re-started and then it seemed to be ok and all the files came up on the desk top and then it had all the vertical lines again! my computer has never had any problems and i am wondering what could be causing this? it won't start up now without this happening. does anyone have a clue as to what has happened? i am really really worried...thanks!