p.s. I would like to keep the look and feel of my existing site on each page the site is theipmt dot com. Thanks

No need to spend money on anything if those are your only requirements, there are many software suites that can do that - including Elgg, Drupal, Joomla, (Wordpress probably, never used it, but I imagine it could).

It's the 'limited web experience' that might be the issue, no amount of paid software will get it working the way you want.  There will always be steps to set up databases and configure settings.  You should find an experienced developer and have them configure one of the listed platforms (or whatever else they may recommend) for your needs.