grabbing data from a site

I have the following website that i want to grab info from: http://www.bom.gov.au/products/IDV60034.shtml Say I wanted the current temperature for Melbourne from this table, what line of code would I need to tell it to get that info - ie, an ereg() expression... i'm wondering whether there are ways of saying "i want the third column of a particular row - in this instance, Melbourne"? Thanks for any help. Adam.