Lubuntu Software repository

[Bill Stanley]

Hi,

    I recently installed Lubuntu 12.04 on an ancient (circa 1998) 
computer.  Pentium 2 with 384 Megs of RAM.  It seems to run reasonably 
well (actually better than expected) but there does seem to be few apps 
that I can use.  There are the apps that come with the installation but 
a look in the software repository shows only the apps that were 
pre-installed.  No new apps seem to be available.

    I was hoping to install Firefox and particularly Thunderbird because 
all he uses the computer for is email, light duty web browsing and some 
word processing.  Is there a version of these softwares that I can use 
with Lubuntu?

Best wishes

William Stanley