HARVARDEDGE  DARTMOUTH QUARTERBACK: Senior Brian White lived up to his preseason billing last week at Cornell, connecting on 15 of 23 passes. Despite a slow start, White has experience and talent. Look for him to open it up today. Can run and pass. Knows Multiflex.  *  QUARTERBACK: Big Green signalcaller David Gabianelli is still green, with only one game of significant varsity experience. He looked decent against Colgate last week, but Yukica has called the quarterback situation "not the best thing in the world." An understatement. Gabianelli replaces competent but injured veteran Brian Stretch. RUNNING BACKS: Harvard's backfield is perhaps its most overrated area. Fullback Robert Santiago is the best in the league in the open field, but has rarely seen daylight this season. Rufus Jones will sit out today's game with an injury. Joe Pusateri, Terry Denson and George Sorbara give the back field some depth.  *  RUNNING BACKS: Hard-nosed tailback Ernie Torain has averaged over 70 yards per game, but only 3-1/2 yards per carry. He may have problems against an aggressive Crimson line. Fullback Rob Brown is injured, and his replacement, senior Tom Stephens, is untested. Yukica wants to run, but he may not have the talent. RECEIVERS: Sophomore Lamont Greer gets his second career starting nod today, coming off an outstanding performance last week. Backed up by junior Joe Connolly and senior Chuck Shirey, Greer gives the quick receiving unit an aerial and rushing threat.  *  RECEIVERS: Dartmouth's strong point. All-Ivy split end Scott Truitt has caught three times as many passes as all Harvard wide outs combined. Flanker Geoff Michel has more catches than any Harvard split end. A dynamic tandem, Truitt and Michel will test the pass coverage of the Crimson's storied secondary. OFFENSIVE LINE: Only George Kostakas returns from last year's starting unit. This group has had some difficulties so far, making several mental mistakes. It's also shined in spots. It's the squad's biggest question mark, and potentially its biggest problem. The key to the whole offense.  Even  OFFENSIVE LINE: Huge. The offensive five averages 250 lbs. The five Mammoth Greens aren't particularly quick, however, and haven't pushed teams around. Nonetheless, they're big. Two-hundred seventy-pound behomoth and right tackle Slade Schuster leads this group. DEFENSIVE LINE: Bill Ross and K.C. Smith lead a unit that is the squad's most pleasant surprise. Sophomore Greg Williams also played a top-drawer game last week. Has allowed just two touchdowns in the fourth quarter all year.  *  DEFENSIVE LINE: Dartmouth has given up six yards per rush this season. Enough said. Nonetheless, we'll also say that their three down linemen aren't very big, nor very talented. LINEBACKERS: The defensive forte. Captain Brent Wilkinson, who is still recovering from an injury, leads this group. Returnee Scott Collins also joins a fine tradition of Harvard linebackers. No problems here.  *  LINEBACKERS: The Big Green sets up with four linebackers, but more is not necessarily better. ILB Len Fontes leads the squad with 54 tackles, and senior Peter Kortebein has 49. The linebacking corps has had to balance between pass and run coverage this season, and has met with only marginal success. SECONDARY: Safety Cecil Cox and cornerback Lee Oldenburg have made the defensive secondary a hard-hitting aerial net. Nonetheless, Ken Tarczy and Frank Ciota have played erratically. But Dartmouth quarterback David Gabianelli shouldn't test them.  *  SECONDARY: Cornerback Steve Briggs was Dartmouth's defensive player of the week against Colgate last Saturday, but he leads a unit that gave up 54 points. The Big Green secondary plays a flexible four-deep. Petite Joe Petite will try to smack heads and cover the run with only moderate success. KICKING GAME: Punter-placekicker Rob Steinberg turned from goat to hero last week with his game-winning field goal. His placekicking and kickoffs have been consistently strong, but his punting has been atrocious in spots. Steinberg needs to improve his punting form to become an offensive threat.  Even  KICKING GAME: Placekicker Craig Saltzgaber has one of the strongest legs in the league; he is perfect on extra points, and has converted one of two field goal attempts. Punter Kevin Griffin is average. A nondescript area.