Howdy greencroft. I haven't ran Damn Small linux in a while. The Compaq I have it on now belongs to a friends daughter.
Ok. I remember Dillo always had a problem with logins. Even with Forums and Google. You can try and install latest Dillo Browser from
Dillo Web Browser :: Home Page
I am sorry. But your sound issue didn't give me a lot of hits for Damn Small Linux but I got more hits for using just Linux
Sound doesn't work in Linux with ES1888 sound chip - Google Search
With old Legacy Hardware. You will have to experiment and work a little harder than normal because legacy hardware and the 2.4 kernel in Damn Small Linux is Dated also.
Puppy 3.01 runs a new Kernel and Browser also if it will run on your Dell. Newer Versions like 4.0 puppy linux won't boot on old hardware like yours though. Any Puppy Linux distro from 2.15 to 3.01 should be ok though.
Below Link is where I have a friend who hosts older versions of Puppy Linux for Downloading. I know his site is in German as he is German. (I am a country boy Texan) So
just maneuver down the page and look at what is there.
Puppy
Good Luck resurrecting the Old Dell. It just takes some Skill. But after some practise. You can get that Laptop running wireless also via PCMCIA with Linux. I have done it on P1 Laptops and using Sea Monkey Browser in Puppy. Damn Small was more problematic because of 2.4 kernel issues. But there are old wireless B PCMCIA Cards that are compatible with it.
Verified Wireless Cards - DSL Wiki