ok got my e3000 with dd-wrt and even installed optware and it works fine, but now I am stuck... the instructions say to copy files to the storage device;
(Unpack the mipsel CGminer package. (Suggest you copy the .tar.gz to the router and untar it there)

but I have no idea how to do that over the telnet, I am also not a linux person so I have no idea what to do there either. Any help would be apreciated, thanks.