Apache (PHP) and Mysql Tweaks - Windows Server

Dear Freelancers, First of all, I will NOT choose anyone with no feedback, no matter how good you are. I need a REAL professional here as the work is very sensitive. Please read full description before placing a bid. MOST of the work has already been done. The remaining tasks is tweaks to the server. Background : The server is a windows-based quad-core with 8 GB of RAM and 1 TB harddrive. I'm looking for a real windows/apache admin who can check the apache (and PHP maybe) and Mysql settings to get the site back to it's original performance. Lots of tweaks have been made and the memory leaks and everything have been fixed. The main problem is : when there are too many mysql connections, the server becomes very slow and at the end, crashes. Especially during peak times. We used to have 500-650 visitors online, but now we only get 300. Above that, the site goes very slow. The site is Joomla based. No need to upgrade as it crashes some components. The only thing i need you to check the mysql /apache (and maybe PHP) to get the performance back. I need a very fast turnaround. I'm just missing a setting somewhere and don't know which one it is. Attached is the changelog of things made if that could help you understand what has already been done. Please no timewasters and tryers. I'm a sys admin myself and would know first hand if someone is trying to cause more harm than good. I need someone VERY proficient with configuring HIGH TRAFFIC websites. Mine is getting 30 000+ visits a day, so keep that in mind. Budget is low as it's just a couple of settings to change. The server is windows 2003 using apache 2 and php 5.2.8 - Again, please please please, if you can't do it, don't try. I will need full changelog of things done, so i can revert the steps back in case i find any issues later. There's nothing to change on Joomla, only the server settings need to be amended. You will be sent an NDA and need to be on skype as well. Note : Payment to be sent when project has been verified. No escrow or advance payment. Thanks