There is probably some environment variable pointing to your home:
scp $HOME\Desktop\myzipfile.zip user@host:/path/to/whereyouwant/thefile
But then you will have probably problem with :
in the path. You can workaround it using:
cat $HOME\Desktop\myzipfile.zip | ssh user@host cat /path/to/whereyouwant/thefile
which is basically the equivalent using pure ssh
. But make sure you have set-up passwordless authentication or control master, otherwise it will fail.