now while trying to build-dh I get:
warning: can't open config file: c:\openssl/ssl/openssl.cnf .... ... ..
though it does output a dh
this is an artifact of the openssl binaries that come with openvpn 2.2 ; you can ignore this warning
when tring to build-ca I get the same as above plus:
error on line 150 of openssl.cnf
2648:error:0e065068:configuration file routines:str_copy:variable has no value:.\crypto\conf\conf_def.c:610:line 150
you probably forgot to load the 'vars.bat' file first - see the HOWTO
http://openvpn.net/index.php/open-source/documentation/howto.html#pki for details.