fork with windows

[hudo]

Hello,

i'd like to fork with windows.
Excerpt of the code:

if (fork == 0 ) {

print "elem:\n $elem\n";
### $elem looks like http-string below
#http://www.mobile.de/SIDUXnSMwjASJfhgZ4t-.0eNg-t-vaNexlCsAsK%F3P~BmSB10LsearchPublicJ1070052814A1LsearchPublicIMotorhomeS-t-vpLtt~BmPA1B20A0/cgi-bin/da.pl?bereich=womo&id=11111111129267353

### windows
$a="file://d:/aaa_perl_win/$elem";
$a="file://d:/aaa_perl_win/$elem";
$a="file://d:/aaa_perlwin/aaafile.html";
#system ("start iexplore.exe file://d:/aaa_perlwin/aaafile.html");
#system ("start iexplore.exe $elem");

#exec("start iexplore.exe file://d:/aaa_perlwin/aaafile.html"); ### works but perl-programm ends
exec("start iexplore.exe", "http://www.mobile.de/SIDUXnSMwjASJfhgZ4t-.0eNg-t-vaNexlCsAsK%F3P~BmSB10LsearchPublicJ1070052814A1LsearchPublicIMotorhomeS-t-vpLtt~BmPA1B20A0/cgi-bin/da.pl?bereich=womo&id=11111111129267353");
#exec('start iexplore.exe "$elem" ');

### unix
#exec("konqueror",$elem); ###works with linux

CORE::exit(1);
}

It works fine with linux (line with konqueror)
It works with windows if a file is specified (not a http-string) --- but perl program ends
It does not work with windows if a http-string is passed ....

I think its a problem of quoting ??

On a console: start iexplore.exe "http://www.mobile.de/SIDUXnSMwjASJfhgZ4t-.0eNg-t-vaNexlCsAsK%F3P~BmSB10LsearchPublicJ1070052814A1LsearchPublicIMotorhomeS-t-vpLtt~BmPA1B20A0/cgi-bin/da.pl?bereich=womo&id=11111111129267353"
works fine.

So I wrote a bat-file:
start iexplore.exe "http://www.mobile.de/SIDUXnSMwjASJfhgZ4t-.0eNg-t-vaNexlCsAsK%F3P~BmSB10LsearchPublicJ1070052814A1LsearchPublicIMotorhomeS-t-vpLtt~BmPA1B20A0/cgi-bin/da.pl?bereich=womo&id=11111111129267353"

but this doesn't work.

Please help
:(