SEARCH RESULT FOR BLASTp from NCBI

[Zainul Zain]

Hello, My name is Nazar. I',m stuck with this problem of interpreting 
the search result that was send back to me from NCBI.  Could anybody give 
me some clue of what the "High Score" means etc.

For Example:
                                                                      Smallest
                                                             High     Poisson 
Sequences producing High-scoring Segment Pairs:              Score  Probability
                                                                    P(N)
sp|P11166|GTR1_HUMAN   GLUCOSE TRANSPOTER TYPE 1, ERYTHR...  2505   0.0
sp|P13181|GAL2_YEAST   GALACTOSE TRANSPORTER (GALACTOSE P... 157    2.6e-25

Could anybody tell me the significant of the two "High Score". I know 
that the one with the smallest Poisson Probability is one to look at. 

Actually, I have a lot to ask but let sort the above puzzle first. Thanks.

Nazaruddin Mohd. Nawi
Molecular Biology Research Lab.,
Universiti Sains Malaysia,
Malaysia.
E-mail Address : Zainul at kb.usm.my