How to install the keyring package

[Nic]

Quite probably a silly Q for anyone more familiar with Terminal.

A/ Downloaded:  -i suldr-keyring_2_all.deb [Firefox dumped it in Desktop]
B/ input: ~$ sudo dpkg -i suldr-keyring_2_all.deb
C/ Output: dpkg: error processing archive suldr-keyring_2_all.deb (--install):
cannot access archive: No such file or directory
Errors were encountered while processing:  suldr-keyring_2_all.deb

Is this as simple as moving the download somewhere? If so where please? detailed Terminal instructions would be appreciated : I also have Synaptic.

[bchemnet]

Type "cd Desktop" (without quotes) in the terminal, prior to issuing dpkg command.  When you open the terminal you are in your home directory, not the Desktop.

[Nic]

Many thanks - it worked.