1600CC - VW buggy 1600cc engine --- ALTERNATOR PROBLEM!!!!!
 

hello everyone,
new here. wanted to ask a question about my buggy.
I'm trying to replace the alternator....i've taken everything apart but there are 'two' flat head screws that refuse to turn and come out.
questions:

1. are the two screws shown in the picture what's keeping me from taking the alternator out?
2. how can i take them out? i've already tried lubing them and it still doesn't work. (i'm using a screw driver)

here are 3 pictures:
img846.imageshack.us/i/21993610150168709581295.jpg/
img691.imageshack.us/i/21824910150168709811295.jpg/
img339.imageshack.us/i/21992110150168709771295.jpg/