I have written a Shipping Module that will allow you to set a specifc shipping amount for each SKU in the store. You can download it from my website www.compdat.com (http://www.compdat.com). If it helps you out please consider making a donation. Also, please note that the taxation functionality in it is not ready yet. I will likely have it ready in the next couple of days.
Hey! great shipping mod!
I have found some bugs, if I try to save, It says that saving was ok, but there is not any record in database table of your mod. I have to create them manually.
Please consider fix that bugs and post your mod in the VM extensions dir.
Best regards.