If you have multiple objects to move from PC to IFS, the Internet Explorer route Phil suggested is best.
Just open explorer, type \\yourIPaddress or \\systemname. Login the popup window and you will see your IFS folders. Now you can simply drag and drop just like windows.
May not be as hard as you think
Using My documents
Then login — you are on the IFS — find your path and copy your object to the PC using PC type keystrokes.
Or use Internet Explorer and
CPYTOSTMF and CPYTOIMPF are used to transfer data from the native AS/400 DB2 to flat files on the IFS.
This includes various conversions like conversion to ASCII, creation of .cvs type files, etc).
Since your files were already on the IFS which, is a DOS like structure, all you need is a copy or FTP to move them to your PC or server. You can also use them directly from the IFS.