it should be \\computername or ipaddress\c$, just type it on the address bar of your "my computer" or windows explorer.

depends if the remote server's local drive is shared and access to it requires a previledged password. works on win OS's.

if you can ping a remote server's IP adress and if it's shared you can browse into it, there may be some instances where-in you can ping the server's IP but the explorer will not return any thing, issues like this can be resolved in access by domain, you can ask the remote server's administrator to give you access to certain drives and add you to it's "allowed users"