TheGreenBow IPSec VPN Client Issues

Hello there!
I’ve heard that TheGreenBow IPSec VPN Client can be integrated in expanding network/s to guarantee the security of remote connections. However, I have tried this product on different computers, but still, I cannot make it work. I've tried it on Windows XP and Vista. I also followed every single step on the manual, but I can’t do anything of use with. I need your help with this one.
What should I do with this?
