Any Secure EXE Protection?

["gshawn2" <gshawn2@...>]

Hello, I just found out about this mailing list and I have to say I 
am excited to participate in it. There is so much to learn in this 
area!

I am currently developing an application for Windows... I am trying 
to implement a decent protection so that my software will not be 
hacked easily. I realize that there is no truly safe protection 
scheme, however I'd like your input on the following two questions: 

1) what does a PE-encryptor do, that is different from what a PE-
packer does? is it usually considered better protection to first 
wrap the PE with an encryptor, and then with a packer?

2) which PE-encryptor/PE-packer is considered to offer the best 
protection against hackers/crackers today? It seems there are so 
many and it is difficult to evaluate the strengths and weaknesses of 
each one of them!

Thanks for your help

G S