Schedule E-newsletters to be sent on a specific date and time

Hello I've been using E-Newsletter for several months now and I love it and get great compliments from my clients.

Problem is I'd like to set it up to send on a certain date and time (similar to aweber etc...) Since I can't afford Aweber and prefer to use the features of the e-newsletter, is there a way to specify and/or schedule which letters and what date and time they will be sent? I know that you can set up cron jobs somehow, but would like it to be all in one place so I don't over look and or miss sending out a newsletter on time as I did last week.

As always I look forward to any and all help and ideas here!