What version of phpVMS?
What ACARS?
For phpVMS v7, suggest you read thru the docs, available via the "Docs" link in the top menu.
It really isn't difficult to install phpVMS v7 or vmsACARS.
The challenging part as a VA owner can be setting up your airports, aircraft and flights. Doing this can take many hours - and if you hire this part out, it will get quite costly.
Is your VA up and running on a website at present?