Other then the google search option there are lots of tools available for webmasters that would enable you to check for backlinks among other things. here is one http://www.webtoolhub.com/
I suggest you to use this - Site Explorer - will give more accurate backlinks than Google .. Or else, you cam use this comment: linkdomain:www.example.com in Yahoo..
i think use of yahoo will only show the backlinks which are from yahoo itself so can get much information form it
The only other tool besides yahoo site explorer that I like is Link Diagnosis. It's very helpful in researching your competitors as well.
Guys all tools are useless. I have used many tools but not give perfect results. Yahoo site explorer is the best.
Thanks guys i've tried the yahoo explorer and backlink.nu. They both provided the same results. I did look at the webmaster tool but had to verify with a meta tag. I have'nt got round to doing this yet. So when i have done this i shall see what information that produces. By the looks of things I think i need to get creating more backlinks.