selectively turn off warnings

[Hans Horn]

Folks,

I get many of the following warnings when compiling old f77 code (using 
gfortran v4.5)

Warning: SAVE statement at (1) follows blanket SAVE statement

or

Warning: Blanket SAVE statement at (1) follows previous SAVE statement

Can I turn these off selectively as they are creating a lot of noise?
What dangers are these warning me about anyways?


Also, is there a way to turn off warning about indivdual unused 
variables (e.g. such that are dictated by the API; I typically flag 
these with an "unused_" prefix)?

Thx all,
H.