Hi, I hope this is the right forum !
Someone is spamming my site and trying to disrupt it, so when I click on latest visitors in CPanel they come up as -

adsl201-244206102.dyn.etb.net.co

But when I go to the IP blocker part, it wont accept this because it says it isn't valid... what do I do?????? Is there another place in Cpanel to find the IP? I have limited computer skills, please help !!

Ahh dont worry, I think I have it now. Thanks; )

You're not going to be able to block spam of that nature by blocking that IP in all likelihood.

ADSL IPs tend to be dynamic (changing) IPs. What you'll need to do is to work with your host to block the nature of the traffic and have the traffic itself recognized as spammy.

Arrgh your right it isn't working
I'll have to contact my host, thanks for the help.