net use is supported on all recent windows OS from what i remember
you can mount samba style shares etc, using a username and password, though i'm not sure if you want too, lots of larger ftp sites used to do this, not sure if they still do.
smbmount style
Code:
NET USE
[devicename | *] [\\computername\sharename[\volume] [password | *]]
[/USER:[domainname\]username]
[/USER:[dotted domain name\]username]
[/USER:[username@dotted domain name]
[/SMARTCARD]
[/SAVECRED]
[[/DELETE] | [/PERSISTENT:{YES | NO}]]
NET USE {devicename | *} [password | *] /HOME
NET USE [/PERSISTENT:{YES | NO}]