norton-command window doesn't come out in windows XP sp2.

I use winscp(3.7.6 build306 simplified chinese version) under windows XP sp2, every time I firstly login in to a linux site, the main norton-command-like window doesn't come out( I mean the main norton-command-like window, not login window), and I start winscp again and login in the linux site again. then the two main norton-command-like window come out simultaneously.