Yes, both languages can do system calls. For adminstrative stuff, I generally write scripts in PERL. I am more comfortable using PERL's regexes. Are you sure that you want to email your logs? A busy site can generate alot of logs. Parsing them to generate a report might be the way to go, Then after parsing, rotate them out.
There is an NT equivalent to cron, type 'at ?' on the commandline to find out more.