.tar

hi! i'm new to linux.i installed ubuntu 9.04 from the digit DVD.but how do you install softwares in it like the .tar ones or whatever are given in the digit dvds please help!

there is a prob with the .tar file installation.The rpm packages get installed easily but the .tar r a little bit too even in thier behavior.It will be nice if a detailed instruction is there for gettibg the job done for linux(red h)installation with info abt the grub boot loader or any other...

hey frinds i'm not able to configure gtalk on gaim i have downloaded pidgin .tar file but dont how to install it please help me...