Wanted: Examples using SIMD instructions for 32bit cygwin and 64 Linux

[Siegfried]

I would like to try out some examples of the SIMD (vector) instructions
in g++. Can this be done in g++ 32bit/cygwin? Can this be done in g++
64 bit fedora core 4?

Are the terms SIMD, mmx and sse2 all synonymous in the context of
intell processors?

I found a nice description at
http://x86.ddj.com/articles/sse_pt2/simd2.htm but it did not mention
support in g++. I hope this document is old or incomplete!

After failing to find some good examples with google searches, I hoping
someone can point me to some 32 bit and 64bit g++ code examples I can
try out.

Thanks,
Siegfried