As I'm sure some of you already know, the Pointer Sisters version debuted in May 1981, with it peaking at #2 for 3 weeks. Conway debuted the country version of this tune in April 1982 peaking at #1 for two weeks. Ok, here's a little added trivia: Del Reeves had actually recorded & charted this song (debuting in Sept 1981, and peaking at #53 on the Country Billboard charts) even before Conway's smash hit version. How do I know all this? I own and highly recommend Joel Whitburn's Top Billboard Hits books:
http://www.recordresearch.com/

His series of books are an essential resource to musicians and entertainers like us as it enhances our act with background & interesting trivia regarding the songs we perform, providing the audience a far more entertaining (or at least more informative) show. My audiences really do appreciate learning these things, and it makes the show that much more memorable for them as well, because they then share this bit of trivia they learned from me to their friends, sparking interest in their friends to come see me perform as well. Marketing 101.

My Joel Whitburn Billboard Chart book collection currently consists of:
http://www.recordresearch.com/rock_pop.html
Top Pop Singles 1955 -2002
Pop Annual 1955 - 1999
Top Adult Contemporary 1961-2001
Music Yearbooks (past recent year)
A Century of Pop Music
Pop Memories (1890-1954)
http://www.recordresearch.com/country.html
Top Country Singles (1944- 2001)
Country Annual (1944-1997)

I recommend them all.

Scott