help finding key

[Samick]

ok, im have lots of troble finding
what key is this in

|----------------------------------------|
|----------------------------------------|
|----------------------------------------|
|---4---5---4---2---2---------2----------|
|---------------------5-4h5p4---5-4p0----|
|-2---2---2---2---0----------------------|

some one could take me through the the steps of what they did to find the key, that would be great (thats accually what i really want some one to do)

[AG]

The notes you have there are:

F#, G, E, D, C#, A

The key with 2 #'s in it is D Maj

So you're in D Major

D E F# G A B C# D

But you're concentratin on the F# note, so you are really in F# Phrygian

[Samick]

The notes you have there are:

F#, G, E, D, C#, A

The key with 2 #'s in it is D Maj

So you're in D Major

D E F# G A B C# D

But you're concentratin on the F# note, so you are really in F# Phrygian
ok, so i'v got 3 questions now
1.what notes are sharp what notes are flat in a scale
2.and i i were to solo over this or something would i solo in the key D maj? (considering the key of F# phygian doesnt exist... or dose it?)
3.and isnt there a F in there

[wicked_child]

try to solo with a F# root.

[Samick]

try to solo with a F# root.
in the Key of F# maj. right?

[AG]

Play D Major starting and finishing on F#, you'll be playing F# Phrygian

[Samick]

b it a minor right? and what if it has 2#s and a b or somethin like that?