This workaround may be a little bit complicated and depending on how many images you need. This procedure will be reproduced for each website that you wish.
Open the website and take a screenshot, name it and place it somewhere (all the images should be together)
Browse down in order to acquire the second part of the website, take another screenshot (it will definitely be better if you take a screenshot only of the browser window, which -in my case- is achieved by pressing the Alt-PrtScrn keys binding.
Open Gimp and drop both images in the canvas in order to work with them as layers in the same canvas, as shown here:
Go to the "Image" menu and select "Canvas Size" and adjust the size by disengaging the relationship link and set a 200% height canvas size.
Adjust the transparency of the upper layer in order to preview the re-positioning of it and move it in order to be in the right place.
Once adjusted, reset the layer's transparency in order to be 100% and cut the layers as needed so that you'll have the visual effect of having the image that you need.
You can also edit the image in order to remove the blue buttons, adding items, etc.
At the very end you can export the image in your favorite format (jpg, png, etc.) and resize, edit as a single layer image, and even print it.
Yeah, it's a little bit complicated but if the information in the flash based site is so crucial for you, this is a good way to gather the images.
I am following your question in order to find a better way to do this.