[texhax] justify columns in longtable

[Sarah Bluhme]

Hello,

I was wondering if someone can help me with a Latex problem. Using the 
tabular or longtable environment, I have columns that are word-wrapped 
like the second one here:

\begin{longtable}{|l|p{3cm}|}

My problem is that the text in it is justified on both sides which looks 
awful in a relatively narrow column which may only be wide enough for 2 
or 3 words. How can I insert the \raggedright (or some other) command to 
take effect over the whole column?

Many thanks,

Sarah Bluhme