Is recovery possible of my site?

[The_Boaphile]

I have a site with vbulletin 4.1.7 running it. I neglected the site for some time and it's essentially broken. Is there any way to fix it and update my vbulletin software? I am willing to "go back" and loose all posts going back years if necessary, if this can be done. The site is redtailboas.com. I am the owner. I do not have the tech savvy to be able to make the corrections or changes myself and would have to employ a developer to do the tech work to make this happen. That is even if it is possible. Thank you, Jeff