Wheezy upgrade and Dell Inspiron 9300 (Intel Centrino)

[Lisi Reisz <lisi.reisz@gmail.com>]

Tomorrow I am going to upgrade a Dell Inspiron 9300, with an Intel Centrino, 
from Wheezy to Jessie.  Hopefully it will go without a hitch.  I upgraded my 
own desktop from Wheezy to Jessie last weekend and it was so trouble-free I 
was pinching myself.

Is there likely to be a problem with Jessie on an old computer, either 
upgrading or installing?

If there is a problem upgrading, I shall reinstall using a Jessie netinstall 
CD.  Is there likely to be a problem because the network card is too old??

I was also going to take with me (the computer is 10 miles away) a wheezy 
install CD of some kind just in case.  What I have available is the 
firmware-7.8.0-amd64-i386-multiarch-netinst.iso
Is this still usable?  I see no reason why it wouldn't be, but....

Thanks,
Lisi