Coroflot is a great resource for creating an online portfolio, has a great blog, Creative Seeds, and is the largest and most active job board for creatives from all industries. I like oohing and aahing over the 3D work and seeing what others in my field are putting in their portfolios (Know Thy Competition). It's inspiring. It's informative. It's free!
While you're there, check out this post A portfolio doesn't speak for itself, by Jim Best of Pensa. Although, Jim Best is an industrial designer, the concepts are universal. Tips are short and to the point. This post has 12 fantastic tips that cover Portfolio Design, Resumes and Cover Letters. Well worth the click.
If you want some feedback on your portfolio, I'd love to take a look - send me a link or pdf.
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Happy designing & job hunting!