WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
MSDW SELECT DIMENSION SERIES - DIVERSIFIED INCOME
</LEGEND>
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DECEMBER 31, 2000
<PERIOD-END> JUNE 30, 2000
<INVESTMENTS-AT-COST> 84,654,730
<INVESTMENTS-AT-VALUE> 72,344,594
<RECEIVABLES> 1,593,565
<ASSETS-OTHER> 5,278,647
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 79,216,806
<PAYABLE-FOR-SECURITIES> (91,500)
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> (165,029)
<TOTAL-LIABILITIES> (256,529)
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 93,475,278
<SHARES-COMMON-STOCK> 9,155,645
<SHARES-COMMON-PRIOR> 9,627,702
<ACCUMULATED-NII-CURRENT> 25,624
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (2,193,147)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (12,347,478)
<NET-ASSETS> 78,960,277
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 3,722,495
<OTHER-INCOME> 0
<EXPENSES-NET> (191,644)
<NET-INVESTMENT-INCOME> 3,530,851
<REALIZED-GAINS-CURRENT> (820,621)
<APPREC-INCREASE-CURRENT> (2,504,316)
<NET-CHANGE-FROM-OPS> 205,914
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (3,308,195)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 778,651
<NUMBER-OF-SHARES-REDEEMED> (1,630,048)
<SHARES-REINVESTED> 379,340
<NET-CHANGE-IN-ASSETS> (7,310,141)
<ACCUMULATED-NII-PRIOR> (197,032)
<ACCUMULATED-GAINS-PRIOR> (1,372,526)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> (162,120)
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> (191,644)
<AVERAGE-NET-ASSETS> 81,505,156
<PER-SHARE-NAV-BEGIN> 8.96
<PER-SHARE-NII> 0.38
<PER-SHARE-GAIN-APPREC> (0.36)
<PER-SHARE-DIVIDEND> (0.36)
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 8.62
<EXPENSE-RATIO> 0.47%
</TABLE>
