Likely teams to face GB:
AutraliaS#19 Hewitt
S#98 Guccione
D#10 Hanley
D#1389 Hewitt
Andy would probably win both his single rubbers and Henman should beat Guccione. Doubles could be tricky for Jamie but we shouldn't need him to win.
Likelihood of Winning:
Good.
AustriaS#28 Melzer
S#69 Koubek
D#18 Melzer
D#19 Knowle
Again Andy should beat Melzer and Koubek with some comfort, no luck for Jamie in the doubles but Tim ought to beat at least Koubek if not Melzer.
Likelihood of Winning:
Good.
BelarusS#54 Mirnyi
S#1222 Voltchkov
D#1 Mirnyi
D#1074 Voltchkov
Andy has a good record against 'serve n volleyers' so his two singles rubbers should be a piece of cake. Henman would beat Voltchkov and if you wanted to be greedy could beat Mirnyi in the singles too. Facing Doubles World #1, Mirnyi would be a challenge for Jamie in order for the whitewash.
Likelihood of Winning:
Good.
ChileS#5 Gonzalez
S#55 Massu
D#97 Gonzalez
D#122 Massu
If this is on clay the British team would be facing an uphill battle. Gonzalez and arguably Massu would be favourites to beat Andy, let alone Tim. If it's on hard or grass it's a 50/50 battle: Murray/Gonzalez and Massu/Henman would be hard to call. At least Jamie would be favourite in the doubles.
Likelihood of Winning:
Poor.
Croatia(rumour has it, Ljubicic retired after the defeat to Germany)
S#13 Ancic
S#105 Karlovic
D#90 Zovko
D#133 Ancic
If Ljub has retired we would surely be favourites, if not then like Chile we are facing an uphill battle. Asssuming he has retired I'd fancy Andy against both big servers and Timmy to beat Karlovic in order to get the 3 wins we need. Would also be a good chance to keep Jamie's 100% record in the doubles.
Likelihood of Winning:
Above Average.
Czech RepublicS#14 Berdych
S#76 Hernych (Stepanek hasn't played since 2004)
D#7 Damm
D#16 Dlouhy
On his day Berdych could cause a problem to anyone on the tour and Hernych has beaten Tim recently so this looks tough. Assuming we lose the doubles to a very strong Czech pairing of Damm and Dlouhy, Andy would need to beat both Berdych and Hernych as well as Tim avenging his deafeat to Hernych. We'd definitely need home support on this one.
Likelihood of Winning:
Average.
RomaniaS#109 Pavel
S#666 Hanescu
D#27 Pavel
D#208 Mergea
This one should be in the bag, whether it's home or away. You'd fancy both Andy and Tim to beat the ageing pair of Pavel and Hanescu and really Jamie should be looking at another scalp in the doubles.
Likelihood of Winning:
Very Good.
SwitzerlandS#1 Federer
S#36 Wawrinka
D#38 Allegro
S#206 Federer
With Federer in the side the Swiss become arguably the best team in the world. He's odds on favourite to win any singles rubber and has an impressive doubles record too. So with him in the team we are f***ed. However, hopefully he won't turn up and the tie will be very winnable. Murray could finally avenge the defeats to Wawrinka and beat the Swiss #3 too, and Henman shouldn't have to break sweat to beat Federer's replacement either. Allegro is distinctly average and would predict Jamie would tear him and his partner apart in the doubles.
Likelihood of Winning without Federer:
Good.
Likelihood of Winning with Federer:
Poor.
This is assuming all the British lads are fit and Andy and Tim are able to play all 4 singles rubbers if neccessary, while Lloyd picks Jamie and probably Aucks in the doubles (well anyone half decent that isn't Tim or Andy).

Thoughts appreciated and if anyone has worked out who we are able to face home and who we'd have to face away let me know. (the only ones I've heard is Australia at home and Chile away).