Hyperlinking web addresses in custom fields

In my Directory, I am listing people's websites, e-mail addresses, Facebook pages and Twitter handles. Currently they appear as plain text but it would obviously be more useful if they could be hyperlinked automatically. Since the fields are all created in Custompress, I imagine it should be possible, but is there a way of achieving it without having to get into code (which I don't know much about) or endlessly typing a hrefs over and over again...
An example page is here: http://bit.ly/KiF6H1