Edit3: Additional information: I was able to get the Eclipse/pygame combo running on Windows... just not on MacOSX.
Edit2: Compiling from the shell also works.
Installing Pygame for Mac OS X 10.6.8
Give that a read, it looks like you may be trying to mix and match 32/64bit libraries. This may require you either install the correct version of python to match your dev environment or pygame to match your dev environment.
I ran into this problem before on a 64bit system that required 32bit libraries. The fix was to force python to run in 32bit mode.
The fix to force it into 32 bit mode is include on that page
alias python='arch -i386 /usr/bin/python[version]'
where version is of course your version.
If you are on windows i believe you can do similar as well, though I'm not sure how to alias commands in windows.