The Gimp v2.0.4 for Windows does seem to support pressure-sensitive tablets! This has been a major problem preventing me from using The Gimp. The feature doesn’t seem to be documented and my version has the feature turned off by default for some reason. Perhaps in a future version it will be turned on by default. In the meantime, here’s what you do: add the –use-wintab option to the Target for the shortcut you use to start The Gimp. So it looks something like this: “C:\Program Files\GIMP-2.0\bin\gimp-2.0.exe” –use-wintab.