Option file setting for cipher and hash not global?

[anogeorgeo at softhome.net]

Hi, 

My system:
Windows XP Home SP2
GnuPG 1.4.5 

I wish to have GnuPG automatically use the cipher algo TWOFISH and hash algo 
RIPEMD-160 for all keys that are created. 

I have these settings in my "gpg.conf":
cipher-algo TWOFISH
digest-algo RIPEMD160
s2k-cipher-algo TWOFISH
s2k-digest-algo RIPEMD160 

But when I create a new key and use "showpref" I find the key is using the 
cipher AES256 and the hash SHA1. 

Is it possible to make all keys use TWOFISH and RIPEMD-160 by default? 

Also, is there a batch command that will automatically process the "setpref" 
command after "gpg --edit-key {key at email.com}" is processed?  I tried using 
the following batch file but it prompts to "Command>" after processing "gpg 
 --edit-key {key at email.com}": 

 ---
cd "C:\Program Files\GnuPG" 

gpg --edit-key {key at email.com} 

setpref S10 S9 S3 H3 H10 H9 Z2 Z1
 --- 

Thank you,
Anothony