RED HAT 7.2 and rtlinux V3.1

[rok ostrovrsnik <rok.ostrovrsnik@volja.net>]

I need some help with rtlinux V3.1 installation. I used v3.0 on RH 6.2 
and it worked OK. I even bought the CD.And now i am trying to install 
V3.1 and i have some problems. I apply the patch and everything goes 
fine then i changed the makefile so that it uses kgcc instead of gcc. 
Everything compiles ok but then when i restart the computer with rtlinux 
kernel i cant get to my account anymore so i have to log in as a root. 
So i log in as a root. then i do make, make devices and scripts/insrtl 
but here i get some unsatisified dependencies.
1. i would like to know if anybody compiled rtlinuxV3.1 on RH7.2
(i used kernel 2.4.4 and appropriate patch )
2.when i boot i noticed message that this kernel doesnt support ext3 (?) 
why?

I would really appreciate if somebody would help me.
Thank you in advance
Rok