To my PC my projector has a vga socket but I don't know where to look on my PC for a vga socket I have a dell computer on the back of the tower there's one socket that looks like it,it's a blue socket going diagonal where as all the other sockets go horizontal,please help

Your vga 'socket' on the PC is where your monitor is plugged in to

I don't like to say Google to people but if you search "connect projector to pc", you will find many sources and many of them have steps and images to help out.

i've wired up using the vga socket on both projector and pc (i think it's the vga socket on the pc ive got a dell and the socket i put it in is blue),but the projector is still saying no signal,what am i doing wrong,please help

You have to press a combination of the Fn key (blue writing) + the key that has a video icon on it (it might be on the F8 key)

What operating system? There is usually something in display settings or somewhere that gives you the option to "connect to projector."

Do you also have your monitor hooked up at same time as doing this as there 'should' only be one VGA port on the computer unless more than 1 video card.

However the screen is pretty blurry,is there anyway of fixing this,I've got my virgin cable going through it and the picture is clear,please help

This may sound dumb... but you did adjust the focus on the projector... didn't you?

However the screen is pretty blurry,is there anyway of fixing this,ive got my virgin cable going through it and the picture is clear,please help

Do you know the resolution of your projector?