Hello,
I've got a good bit of experience cleaning servers, removing viruses, making sure everything is up to date and would happily be able to work on this for you over the next few days.
This is not something that can be done immediately, unfortunately, as this is an in depth process, and may actually result in having to wipe your server and starting over again (from backups, of course) ... If this is the case, I'll help you get this done without hesitation, or additional payment necessary.
Understandably, my bid is higher than what you wanted, however, realistically, this is a great bit of work, not something that can be done easily, or , reasonably, for the amount of money you're requesting it to be done for.
If you'll look at my profile, you'll see almost 100% satisfaction (can't please everyone, unfortunately), and, with the exception of a few non paying clients, a 100% completion record.
I look forward to hearing from you and working with you on this project