Archbob, You can try our new widget, it's not PPC, but it might work well with your site. The link is in my signature.
Have you tried Casale Media. I've posted a link that takes you to a page with some quick details about it. It's just like ValueClickMedia and has a similar interface / control panel. It's not totally the same, but similar in some ways. It's just as reputable or even more reputable than VCM. Many sites use it including large ones. Not sure if you will get accepted as this is a higher tier network, but if you don't try you will never know. I use them for my entertainment site and have always been paid every month on time, every time. I currently use them for my 1st tier followed by ValueClickMedia and them RightMedia Exchange. Good luck with your site.
I'm already a apart of casale and have been for use. I use valueclick on my main site, its CPM rates are higher. Casale isn't a high-tier network, its considered second-tier.