Preventing Bot Registrations

[ciosumday]

Hello All,

I am having an issue with my gallery (www.vipinva.com/gallery) and that i am getting an annoying amount of spam/bot registrations into my registered users. Is there anyone I can prevent this, i looked to see if there was a captcha plug in but couldn't find one. Anyones assistance would be greatly appreciated. 

[SaWey]

You did some good searching I guess?
Look at result number 2