problem with Tajima's D and ROH for DCMS

[spchavan10]

Does anyone knows how to setup Tajima's D file for converting the D scores to p-values by using stat-to-pvalue function.
I mean what should be the window size for that?
"CHROM" "BIN_START" "N_SNPS" "TajimaD"
1 0 2 0.150434
1 500000 2 0.961961
1 1000000 4 -0.392816
1 1500000 2 -0.385007
1 2000000 8 0.717065
1 2500000 8 -0.429805
1 3000000 8 0.423718
1 3500000 6 0.685038
1 4000000 6 0.309805

Here it shows TajimaD score for n_snps, but how should i correlate this with other methods used in the DCMS (like iHS, where IHS score is calculated for each SNP).
Will it be viable if I take bin size or Window size 50 or 100, for obtaining D-score for each SNP?

And What about ROH, how does it works in the DCMS ?