Hey, go here to find info about NBA Finals details.
http://www.nba.com/finals2003/index.html
The NBA system differs from other sports playoffs in the fact that division champions are not guaranteed home-court advantage at any time in the playoffs, as home-court advantage is decided strictly on regular-season record, without regard to seeding.
Here's what Wikipedia's provided:
The present organization known as the National Basketball Association, then called the BAA (Basketball Association of America), had its inaugural season in 1946-1947.
In the current system, eight clubs from each of the league's two conferences qualify for the playoffs, with separate playoff brackets for each conference. In the 2002-03 season, the first-round series were expanded from best-of-5 to best-of-7; all other series have always been best-of-7. In all series, home games alternate between the two teams in a 2-2-1-1-1 format, except for the NBA Finals, in which the format is 2-3-2.
The 2-3-2 finals format was adopted for the 1985 finals, copying the format that was then in effect in the National Hockey League. Prior to 1985, almost all finals were played in the 2-2-1-1-1 format (although the 1971 finals between Milwaukee and Baltimore were on an alternate-home basis, some 1950s finals used the 2-3-2 format, and the 1975 Golden State-Washington and 1978 and 1979 Seattle-Washington finals were on a 1-2-2-1-1 basis). Also, prior to the 1980s, East and West playoffs were on an alternate-home basis except for those series when distance made the 2-2-1-1-1 format more practical.
Teams are seeded according to their regular-season record. The three division champions and best division runner-up receive the top four seeds, with their ranking based on regular-season record. The remaining teams are seeded strictly by regular-season record.
However, the NBA system differs from other sports playoffs in the fact that division champions are not guaranteed home-court advantage at any time in the playoffs, as home-court advantage is decided strictly on regular-season record, without regard to seeding.
See NBA Playoffs and 2007 NBA Playoffs for more information and the current NBA postseason.
Here's a copy/paste of how the 2-3-2 format has fared since 1985:
Home Team Wins First Two Games
2002: L.A. Lakers def. New Jersey; L.A. Lakers win series, 4-0
2000: L.A. Lakers def. Indiana; L.A. Lakers win series, 4-2
1999: San Antonio def. New York; San Antonio wins series, 4-1
1997: Chicago def. Utah; Chicago wins series, 4-2
1996: Chicago def. Seattle; Chicago wins series, 4-2
1989: Detroit def. L.A. Lakers; Detroit wins series, 4-0
1987: L.A. Lakers def. Boston; L.A. Lakers win series, 4-2
1986: Boston def. Houston; Boston wins series, 4-2
Road Team Wins First Two Games
1995: Houston def. Orlando; Houston wins series, 4-0
1993: Chicago def. Phoenix; Chicago wins series, 4-2
Teams Split First Two Games
2003: New Jersey at San Antonio; ??? wins series, 4-?
2001: Philadelphia at L.A. Lakers; L.A. wins series, 4-1
1998: Chicago at Utah; Chicago wins series, 4-2
1994: New York at Houston; Houston wins series, 4-3
1992: Portland at Chicago; Chicago wins series, 4-2
1991: L.A. Lakers at Chicago; Chicago wins series, 4-1
1990: Portland at Detroit; Detroit wins series, 4-1
1988: Detroit at L.A. Lakers; L.A. Lakers win series, 4-3
1985: L.A. Lakers at Boston; L.A. Lakers win series, 4-2
Home Team Wins Middle Three Games
None
Road Team Wins Middle Three Games
2001: L.A. Lakers def. Philadelphia; L.A. wins series, 4-1
1991: Chicago def. L.A. Lakers; Chicago wins series, 4-1
1990: Detroit def. Portland; Detroit wins series, 4-1
Home Team Wins Last Two Games
1994: Houston def. New York; Houston wins series, 4-3
1988: L.A. Lakers def. Detroit; L.A. Lakers win series, 4-3
Road Team Wins Last Two Games
None