When the download process is started, the Transfer window shows information similar to the following. You can toggle back and forth between any search window and the transfer window. Click the button "Transfer" to display the transfer window.

File.
This is the name of the file you are downloading. Double check to make sure it is the right one so you would not download a wrong file unnecessarily.

User.
This is the screen name of the user who is sending the file to your computer. WinMX can download the same file from more than one users if they are available on the networks. Your downloading session can be completed in a much shorter period of time if the user has fast connection speed or there are more than one user sending the wanted file to you.

AFS (Auto Find Sources).
This is the minimum interval WinMX will wait before attempting to find the file you are downloading again in case the download process is aborted or interrupted for whatever reason. A good number is from 10 to 15 minutes since the availability of popular files are unpredictable on file-sharing networks. If you set a small value here (every minute), you are wasting computer resources and chances are good that you are not doing better than setting at 15-minute interval.

AEQ (Auto Enter queue).
Some queues are long (100 or more, this means that there are 100 persons ahead of you waiting for the file offered by this user) due to possible two main reasons: 1) the file is popular or well-sought after, 2) more importantly, the people waiting in the queue do get their turn and their wanted file from this user. Here is the dilemma. If setting a small value, you seem to get into a shorter queue quickly, but eventually you may get cancelled out. Setting a larger value will get you into a longer queue with more waiting time, but you may get the file you need. Experiment with your connection speed and what you have to offer.

Speed.
This is the connection speed of the user who is offering the files to download. Typical connection speeds are DSL, cable modem, 56K dial-up, etc.

Bytes.
This is the number of bytes your computer already receives during the download process. The percentage of completion in the Status field is computed by dividing this number to the total file size.

Status.
This field indicates the percentage of completion. WinMX can resume the download from where a file was left off so you do not have to download from the beginning.

K/s.
Number of kilobytes per second your computer is receiving. If there are more than one user sending the same file, this number can get large (ideal situation) and the download process is shortened.

Time Left.
The approximate time needed to complete the download.