I know of 4 things you can do.
1. Ignore them (yeah, right!)
2. Disable JavaScript on your computer (In IE, go to Tools, Internet Options, click on the Advanced tab, and uncheck "Enable Java Console" under the Microsoft VM section). The downside to this method is that some web pages you want to use will not work, and you will have to change the option, close IE and re-start it. There is a script you can run to do the actual change, but you still have to close and re-open IE for it to be effective.
3. You can block them with a program like
CookieCop . This can be set to block all pop-ups. However, like disabling Java, this will keep some windows from popping up that you want to pop up. You can set it to ask you if you want a pop-up to open, but this is almost as annoying as the actual popup. ALMOST. You can also Pause the program so that you can open a window that it is trying to block.
4. You can use a program called
POW. Everytime you get a popup you don't like, you can add it to a "blacklist" of windows that are not allowed to open. Of course this has a caveat also. The way it works is it looks at the title of the page - what shows up in the title bar of IE. So if you get a popup with the page title of "Classmates", and you add it to the list, when you try to go to the real Classmates web site it will close! So you need to exercise some care when using this method.
Oh yeah, and number 5: unplug your computer
BTW, I can't imagine the DSL has anything directly to do with this problem unless you're accessing your service through some kind of a "special program".