I don't know much about networking, but I've always been able to get things working. This sometimes involves flailing about, so I can't recount what I did. Anyway, you need to have the wicd daemon and/or the wifi-radar daemon running. You enable them through VASM, SUPER, SERVICE, SERVSET, select your runlevel or enable the daemons in all of them, then select wicd and/or wifi-radar. I have just wicd enabled on my wireless laptop. OK your way out.
Have you tried wicd to set up your wireless connection? That's what I use. I do have one odd thing that happens every time I boot VL6 Light. My connection is active when VectorLinux starts up, but I can't get on the Internet then. Using wicd I have to disconnect the active connection and then reconnect the connection. Then I can get on the Internet. I've tried all kinds of things to eliminate this extra step, but they don't work. So I gave up and just disconnect and reconnect and everything works fine then. The connection is very solid and never gives me problems.
I have a TrendNet USB wireless adapter with a Ralink chip. I think the driver is rt2870sta. I use WPA encryption and fixed IP addresses. I think I had to do some hair pulling getting it to work, but I've forgotten what I did. Nothing extraordinary.
Good luck! Try not to get discouraged because using VectorLinux is worth whatever effort it takes to get your wireless working.