FTP Uploads?

Hi, i have an issue. I have WD uploading ftp fine, i have not purchased a ld350 and the ngx software. That uses also port 21 ftp and now they are clashing with each other.
What can i do to fix this. Can i use my own ftp server to gather the data from both sources and upload and if so what info?
Would this also effect the MYsql upload i have (im sure thats on a different port)
my server doesnt have another port apart from 21.

thanks

in what way are they clashing exactly?

they are both trying to use port 21 on the same pc and as WD seems to be always on and the other cant open the port.

that normally should not be a problem on the pc end
is the problem with your ftp host?
what is the exact error?
the more detailed info you can provide, the better
also you could try using passive mode