[dba-Tech] Installation modifications

In the past month, due to work demands, I have had to learn my way around
(or at least vaguely into) three programming languages (Java, C++ and C#).
Most of the C# requirements were already installed, but nothing related to
Java or C++. So I got some books and installed some CDs and downloaded this
and that from Sun and Oracle and elsewhere.

This is no big deal, or precisely two clicks large. Now when I boot up I get
two error messages, almost identical, that say Windows doesn't know what
program created default.bar and default.br1. The extension is the only
difference in the messages.

Since I've installed so much software lately, I haven't the foggiest notion
which new software may be complaining to me. I went to fileExt and it listed
a couple of what I assume are games. There are no games on this box.
Actually, there is the bundle that came with this HP box, but I have never
so much as run one of them even once, so they are not the culprit.

Anyone have any idea what program likes the name default.bar?

TIA,
Arthur