OK, you are confusing me with your terminology. Is it that it won't download or that it won't install?
Downloading would be the process of retrieving the driver from elsewhere, such as the HP website, and storing it locally, such as on your computer hard drive. This process is totally independent of your printer and, for that matter, the version of Windows. However, this specific driver's install package IS an executable (runnable application) and for security reasons your company may prevent you from saving exe's; many companies do not want employees installing software on company machines. This would be corporate software or policy settings that would prevent saving of files with a .exe extension, it would NOT specifically be "because it is Enterprise Edition". To my knowledge, enterprise edition functions exactly the same as Windows Ultimate except for pricing, licensing and activation options. So to be clear, is it that you cannot "download" the
HP 1022n driver installation file from the HP website (BTW download the troubleshooter diagnostic utility too)? .... or is it ...
that you cannot "install" the driver? If the driver is actually downloaded to your hard drive but then you cannot run it; that would be an "Installation" problem rather than a "download" problem. For installation, the driver has to be compatible with the bit-size of your OS (32 or 64), not the edition, and this driver IS 64-bit compatible so it should work on any W7 64-bit edition. However, again, it is possible for your corporation to prevent unrecognized executables/applications from running.
From the sounds of it you have downloaded the driver and you are able to start the install but then it says it cannot detect the device as being connected to your USB port. So if it is in fact an installation problem but you do have the needed administrator privileges to install the driver then the next step would be to try and run the diagnostic utility to see if it can detect the problem. It has step by step instructions.
NOTE: It is also possible for corporations to lock down USB ports to prevent installation of foreign hardware but again this would be corporate security settings and can be changed if they are willing, not a "will not work because it's Enterprise edition" reason.
So what I'm saying is, from what I can find, this driver is compatible w/ 64-bit so if they are willing it should be possible to install but you have to have the proper authorization to download and save the exe, the authorization and administrator privileges to run the exe and install the driver. And the USB port cannot be locked down with security settings and/or software.
Typically a person with Administrator privileges would have to log on to your computer and run the driver installation software and then it would work. I'd suggest having that person come to your desk and run the diagnostic utility because this printer is supposed to be 64-bit compatible and Enterprise shouldn't matter.