Perl it is not able to meet the need of storing 200MB of data.

Here is a 200MB file:

C:\>dir acktrace
14/06/2012  18:51       206,937,739 acktrace
[download]

And here is a perl script loading 10 copies of that file into less than 2GB of memory; then discarding it and recovering all the memory:

c:>perl -E"undef($/); $f[0]=<>; $f[$_]=$f[$_-1] for 1..9; say`tasklist
+`; undef @f; say`tasklist`;" acktrace | find "perl"
perl.exe                      7996 Console                    1  1,927
+,000 K
perl.exe                      7996 Console                    1      4
+,796 K
[download]

Don't blame Perl, or ActiveState or Windows because you don't know how to use them effectively.

If you want actual help; post the actual code.