Zip Plaintext Attack Query

hi,

I am trying to break the password for a zip file using the plain text attack. Since there is only one setup file (an exe file), I had to do a partial attack on it. So I copied the fist 100 bytes of the MZ header and zipped it up using winzip. Does the winzip version have any effect on the recovery ?? Am i doing wrong somewhere ?

I am using advanced archive password recovery v2.20 to do plaintext attack, but use the default values for plain text attack. any advice on this :