With VMware running, in Windows go to Start, then My Network Places. Look in the list of computers for 'unknown' ... there will be entries for :
filesystem on debian server (Samba 3.0.14a-Debian) (Debian)
homes on debian server (Samba 3.0.14a-Debian) (Debian)
user on debian server (Samba 3.0.14a-Debian) (Debian)
Browse into these and you should find your zip (mine is under \\DEBIAN\user\rockbox\build)