newsletter plugin issue (really need help!)

Hi,
I tried to install a newsletter plugin a short while ago. When I activated it, my entire admin locked up and I wound up having to delete the plugin from my cpanel.

I have a micro jobs site that is growing in members every day, but would really like to build this newsletter (with rss feeds).

At issue is which newsletter plugin will work. Is there anyone out there who can help me with this problem/issue?