Let me be the first to answer your questions point by point--
"I've been told many, many times from my company's I.S. guys that Access is better than Excel..."
Their answer is rediculous. Better at what? If you're totalling numbers and creating graphs, complex formula calculations and what if scenarios, I think not. These are things a spreadsheet does, not a database. Sure I can write SQL that imitates some of Excels calculation ability but for hard core number manipulation, a spreadsheet is the correct tool.
However, if you need a repository for information that can be retrieved at any point on the network, forget Access. It doesn't have an TCP/IP client middleware nor a database instance running that controls in/out from their file structure. Access is a good desktop database but it should never be considered for serious use in a company where data integrity equals dollars. It simply does not have the robustness or controlability to make it a good choice.
"they never explain why though..."
Undoubtedly. It's because they have no clue what they are talking about. If they started saying words like MySQL, SQL Server 2000, Oracle, ASP, Schema etc., I'd consider giving them more credibility (unless you think they are just trying to blow you off).
"I work in an accounting department and am very partial to Excel."
I'll bet! Excel is a fantastic program for anyone working with numbers. This reminds me of the story when the two guys that invented Visicalc, (the original spreadsheet) were showing the prototype for the first time to a group of accountants. They changed a value in a cell and the whole sheet recalculated in a couple of seconds. Hands started trembling and checkbooks came flying out immediately. We know why you guys love Excel-- it save you tons of time and is easy to implement ideas in.
"I know how to use Access somewhat, but I've found I can use Excel for almost anything."
Yes, the database learning curve is kind of steep and it would probably be better to hire a programmer/analyst to come in and integrate a database solution for you rather than attempt it yourself. There are a lot of issues to getting one right so it provides useful information and is secure, reliable and fast.
If you would like to discuss this further, look me up on my site,
www.markhenri.com, and I'll be glad talk to you further.