Snow Leopard to Lion install problems

I am upgrading my OS from SL to Lion. I want to do a fresh install as opposed to an in-line upgrade.

I also have a bootcamp Win7 install on this computer too.

I backed up my SL installation onto an external HD using CCC. On the windows side, I booted into Win7 and used the built in function to create a system image of my windows installation.

What I tried to do was to wipe my HD totally clean of all partitions, and then install Lion, and then use the bootcamp utility to partition space on my HD, then put in the Win7 install disk and tell it to restore a previous system image as the "install" of Win7. It seemed to work except after it was all done I went to disk utility and saw that there may have been a little bit of unutilized disk space on my HD, so I extended my OSX partition to fill all the free space, then restarted. When I did so, everything broke. I could not boot into Lion, nor could I even see the Windows partition any more.

What's the correct process to get this all set up? I did a little reading and saw that changing partition sizes in Disk Utility after bootcamp was installed may be the problem and that is what breaks everything? I should just leave the partitions alone after I get it all set up?

Running off my USB bootable SL image for now.