Leinster are boosted by the return to fitness of Brian O'Driscoll ahead of tomorrow's Heineken Cup clash against Edinburgh at the RDS.

The Ireland captain injured his ankle in the Magners Celtic League win over Munster last weekend.

However he has trained well this week and proven his fitness to coach Michael Cheika ahead of this crucial game.

He partners Gordon D'Arcy in the centre.  Indeed, the backline us unchanged from that 10-3 win over Munster.

Shane Horgan continues the back-three combination alongside Luke Fitzgerald and Rob Kearney, who starts again at full-back.

The one change in the pack sees Keith Gleeson start in the back-row alongside Stephen Keogh and Jamie Heaslip.

Tomorrow's game kicks-off at 8pm and is set to be an 18,500 sell-out.

Wales star Gavin Henson has been ruled out of action for up to six weeks after breaking a bone in his hand.

Henson was hurt during the Ospreys' Energy Cup victory over Harlequins last Sunday, and an x-ray has confirmed a fracture of the fourth metacarpal in his left hand.

The Ospreys expect Henson to be sidelined for between four to six weeks, meaning he will miss remaining Heineken Cup pool games against Ulster (twice), Gloucester and Bourgoin.

Henson though, should be available for Wales' Six Nations Championship opener against World Cup finalists England at Twickenham on February 2nd.

LEINSTER:  15: Rob Kearney, 14: Shane Horgan, 13: Brian O'Driscoll, 12: Gordon D'Arcy, 11: Luke Fitzgerald, 10: Felipe Contepomi, 9: Cillian Willis, 1: Ollie le Roux, 2: Bernard Jackman, 3: Stan Wright, 4: Leo Cullen, 5: Malcolm O'Kelly, 6: Stephen Keogh, 7: Keith Gleeson, 8: Jamie Heaslip
REPLACEMENTS: 16: Brian Blaney, 17: Stephen Knoop, 18: Cameron Jowitt, 19: Shane Jennings,
20: Chris Keane, 21: Jonathan Sexton, 22: Gary Brown.