I wouldn't cut and paste. I'm not sure if Sneaky handles it, but I would recommend using the import feature of the client.
From the command line, in the distributed.net folder, use the following to import the input buffer from the floppy:
dnetc -import buff-in a:\buff-in.rc5
This will take some time depending on the size of the buffer. To speed things up, rename the buffer file you want to import, copy to the dnet folder, then run the -import. For example, I rename my buffer to be imported to BUFF-INA.RC5, then I run the following command:
dnetc -import buff-ina.rc5
You can also import output buffers.
