Thank you very much, Laura!
I am really sorry, I think I forgot to tell you that I resolved it and managed to get Search Form and Active/Popular/Recent below each other in Side Bar.
After your code it looks like the screenshot …so I think I will have to remove it..
I am not sure I want Popular members as I find it pretty irrelevant on my type of site. We are all different from each other, and searching for someone popular can make you miss out the one that suits you the best. If people search for popular members, will mean that those popular will get even more popular, because more will search for them, and the less popular will become even less popular because people stop searching for then….If you see my point :-). So it it possible to have just Most Recent members and Most Active members?
Thanks
Jenni