I know, it's unbelievable that there was no easy to use BASIC environment in the year 2008, but I'm not alone in that quest, read Why Johnny Can't Code.
Finally, I found and downloaded today a "simple basic" from the big "evil" dogs: http://msdn.microsoft.com/en-us/devlabs/cc950524.aspx.
It works, it's very simple. It can have a litle more glitz in how it indicates the errors, but I love the content assist, although it doesn't actually complete the arguments but hey...it's better than Z80...
Sweet, now i don't have to explain to my 8 year-old why he needs "static void main (String argv)" to write "Hello, Andrei".