If you don't want to install additionalsoftware, try this:
a) Create a directory for your files on the windows box (C:\test1 as example)
b) Open a DOS box (run -> cmd)
c) Go into your directory fom above
C:
cd \test1
d) Use FTP to connect to your Aix server
ftp myserver (use your server's name or IP address here)
e) Log in with a user who has access to the files you need
d) Go into the server's directory
cd /some/dir
e) If you want to transfer binary (non-text) files, set mode to binary
bin
f) List the directories contents
dir
g) Get the files you want. Either one by one using "get"
get file1
get file2
. . .
or multiple files at once, using "mget"
mget file*
h) Disconnect
bye
