No 9559, Monday, 15 Jun 09, Nita Jaggi

Some awfully terrible clues today!! I am simply unable to get 8&9D
ACROSS
1 - Regulars’ walk on the border area (5) - MARCH [DD]
4 - One covered in mud is back in to almost sit on the raised platforms (7) - PO{D{I}UM<-}S(-e)
10 - Total examination of the horse (6) - A{MOUNT}
11 - Machine put in for a competitor (8) - COMPUTER ?
13 - Being within, to bury the first person alternatively (8) - {INTER}{I}{OR}
14 - Respect the French art get together to the left (6) - ES{TEEM<-}
16 - Advance only, overheard (4) - LOAN (~lone)
17 - Basic principle of Christian ethics (6,4) - GOLDEN RULE [CD]
20 - Same circle to be made by a wooden knife (5,5) - CREAM SLICE*
21 - Even keep the old style of poetry (4) - EP{OS}
24 - Colour one dog in trouble (6) - {I}NDIGO*
26 - Attendants set off in hospital rooms (8) - STE*{WARDS}
28 - Card game for the French general (8) - NAPOLEON [DD]
29 - Comfortable to be in the house (2,4) - AT EASE [CD]
30 - Hey! Part is cured through treatment (7) - THERAPY*
31 - To reproach the police surrounding the house in Spain (5) - C{H}ID{E}
DOWN
2 - Turn around the sailor to confront boldly (5,4) - {AB}{OUT FACE}
3 - Native bird of these islands (6) - CANARY [CD]
5 - Headless Bob has an old English instrument (4) - (-b)OB{OE}
6 - Heavyset Indian leader and a politician have no order to sign (8) - {I}{MP}{O}{SING*}
7 - Unit of length found in the same treadmill (5) - METRE [T]
8 - Churn the cream covering the soft herb (6) - ?A?I?L
9 - Beauty treatment for a woman in the spa (6) - ?R?M?E
12 - Lens doctor is operating back the caller alternately (7) - {MO}{NO<-}{CLE}
15 - Due act is formed for the English to teach (7) - EDUCAT{E}
18 - Advantage of the high position of a worker (5,4) - UPPER HAND [CD]
19 - Son of a Greek character has a girl to gel about with the right runner (8) - {S}{MU}{G}GLE*}{R}
20 - Customer is caught to give a false impression of the book (6) - {C}{LIE}{NT}
22 - Resist to scold a nun (6) - SISTER*
23 - Change a piece of cloth as one replaces an adult (6) - SW(-a+i)ITCH
25 - Edward comes up on an odd pitch from the surface inwards (5) - {DE<-}PTH
27 - Spills out another portion initially of the cleansing agent (4) - SOAP [T]