i'm a webdeveloper ! from algeria !
i use since 6 months xampp, i find this server kit really performant !
the problem for me is that i'am a multiserver scripts developer : php, asp, asp.net !
so it will be great that you try to add asp support for xampp (it will be better that you do it yourself : xampp developers !) then we use some other scripts like : chiliasp (sun), iasp or perl_asp (www.apache-asp.org)
you have to do it cause this don't let us using iis for this developing !
have nice asp dreams !