I love finding free tools that make my life easier.  I just upgraded the firmware on two HP Procurve 2510G switches and I needed a TFTP server to upload the images. You sure can't beat the free Solarwinds TFTP server. It's easy to set up and use, and highly configurable.  Did I mention that it's FREE?

Check it out <a href="http://www.solarwinds.com/products/freetools/">here</a>.