DISCLAIMER: non-official information.
We're seeded for the 3rd qualifying round, meaning that we play "weaker" teams. Not all teams are qualified yet, and it will depend on the second quali round too, but here are the possible opponents for now:
Sparta Praha
Dinamo Kiev
Slavia Praha
Galatasaray
CSKA Sofia
Vitória Guimarães
Dinamo Zagreb
Standard Liège
AaB Aalborg
SK Brann Bergen
The status of Spartak Moscow and Atletico Madrid is unknown yet, I guess it depends on who qualifies.
IF we manage to pass the qualifying round, the bad news is that we might be seeded in the third pot for the groups (except if one of: Liverpool, Barça, Arsenal or Werder fail to qualify). yep... two years without european football doesn't help....
We could thus end up in a group with ManUtd, Bayern and Fenerbahce.... nightmare.
I'm already nervous ....
Source:
http://www.xs4all.nl/~kassiesa/bert/uefa/seedcl2008.html