um
i know how to take a screenshot
but how do i get it onto a new topic
coz its always to big

Make it a thumbnail, with this code:

but the image doesnt hav a url

When you print the screen, you have to paste it somewhere, like on photoshop or psp or paint... (unless you're on a mac), then save it and upload it.

do u mean upload it to the thing below
sorry im lost

upload it to somewhere like photobucket or image shack, so u can get a url for it

Take the print scrn then open paint or some program like photoshop, psp or ect. press ctrl v (that pastes it)save that print screen img on your computer. go to imageshack.us click choose then click host to upload the image and get the url(link) to the image.

Get the thing up you want to copy.
Hit Print Screen.
Open Paint, PSP, Photoshop...whatever program you have.
Open a new document and paste the screen shot in there. (Ctrl+V or Edit>Paste).
Save the document.
Go to Imageshack, find the image you saved, open it and hit upload.
Copy the link of the image.
Come to cB and when posting, use this code:

ohhhhhhhh
ok
thanx

Btw, the reason you signature doesn't work is because the boards don't accept HTML code, but rather, use BB code.

Use this instead:

hey thanx for that
id just given up

Not to be nitpicky, but hotlinking isn't very nice. You should save the image and upload it to Imageshack or something and use that as your image url.