1) actual bitcoin from git ( moves  variables ...Fees.. from main.h to main.cpp)
 2)  set in src/main.cpp the parameters to
int64 CTransaction::nMinTxFee = 1000000000;    # Override with -mintxfee
int64 CTransaction::nMinRelayTxFee = 1000000000;





3) compile bitcoin

EDIT:
Or.. not tested:  set  -mintxfee  -minrelaytxfee to 1000000000  without editing main.cpp
 

4) in bitcoin.conf:
blockmaxsize=5000
blockprioritysize=0
blockminsize=0

Greets