How to convert a VMWare virtual appliance to work with Parallels at Virtualization Daily
http://www.virtualizationdaily.com/archives/73_how-to-convert-a-vmware-virtual-appliance-to-work-with-parallels.html
"The key here is getting the VMWare image out of the VMDK disk format and into a raw hard disk image."
Ryan Tomayko - Parallels Makes IE Testing Suck Less, Melts Power Cord
http://naeblis.cx/weblog/2006/12/23/parallels-makes-ie-suck-less
"The bad news is that after about ten minutes of running with both VMs open, I started to smell burning electronics."
PD Tweaker
http://www.multisolar.com/software/PDTweaker
"PD Tweaker is an Application Enhancer (APE) plugin that addresses a few shortcomings in the initial release of Parallels Desktop (build 1848) for Intel-based Macintoshes."