With new focus, firm will provide Internet access // Prodigy changes course

WHITE PLAINS, N.Y. Paul DeLacey's pragmatic philosophy is that ifyou can't beat 'em, lose.

And go beat someone else.

The chief executive of Prodigy Services Corp. says the onlineservice, once a pioneering giant looming over all competitors, nolonger can take on the big guys: America Online, CompuServe and theMicrosoft Network.Instead, Prodigy will challenge the little guys, regionalInternet service providers across the nation."We're not concerned with bragging rights," DeLacey said."We're concerned with getting back on our feet."Just a year after a Massachusetts technology entrepreneur and aMexican billionaire bought the nation's fourth-largest online …