Question : MS Access' ability to be used across a network

I am getting ready to develop a fairly extensive DB solution that needs to be accessed across the internet/intranet with a web based form and was wondering how MS Access would fair at at that. Also does anyone have any suggestions for what to use?

Answer : MS Access' ability to be used across a network

MS Access wouldn't be a good choice.
It's a desktop rapid application development tool designed for heavy integration with databases.
JET however is an option I suppose. :-p

Jet (the database engine that ships with Access - often mistaken for the same thing, largely because they both occupy MDB files) can be and is employed for a considerable number of web based solutions.

However your question subject says "used across a network" and body "accessed across the internet/intranet".
So the "network" bit would refer to the "intranet" - but the "internet" would be on top of that yes?

While Jet can handle moderate requirements upon it (especially in a read only scenario) most would recommend a more robust, scalable database backend - i.e. a server database engine, SQL Server, Oracle, mySQL etc etc.
The latter is *very* commonly employed in web based solutions.