|just type the UNC path of the computer in a Search or Run box.|
Windows Key + R -> \\192.168.1.2\
The user has to share the folder and give you a user logon to access it though unless he adds the EveryOne group to the share.
If you just want to do a copy command from the command line (CMD) then it would look like this...
copy \\192.168.1.2\mysharefolder\*.* c:\mylocalfolder\