Unpack the files in the.zip, then to install driver, open the Device Admin; (under winXP) in the Scanner icon, choose "update driver" (o whatever that takes after this) and check "Manually choose driver"(this as the driver is not digitally signed by Microsoft.) The .inf file required may be located in the folder the zip was unpacked.
The following files are found inside the driver download file.
|drivers/hp3200c.inf||2.1 KB||13 Apr 1999|
|drivers/hp3200c.nt||1.8 KB||10 Dec 2000|
|drivers/hpud32.dll||208.9 KB||2 Apr 2002|
|drivers/hpudrv.ini||38 bytes||8 Sep 1998|
|drivers/p1220_32.dll||123.4 KB||24 May 1999|
|drivers/ppclass.sys||85.9 KB||9 Apr 1997|
|drivers/ppscan.sys||91.5 KB||29 Mar 2002|
|drivers/ppscan.vxd||96.4 KB||15 Sep 1998|
|drivers/reg32.dll||17.4 KB||3 May 2002|