HR data transfer

Hi

We are migrating data from legacy to SAP. Can Any one educate me how this can be done through LSMW. I have searched internet but havent found any LSMW help on HR side. we are on ECC6.0 and DTT is not available now so we have to define a strategy to load data in SAP.

Can some one also tell me if there is a better method to load data into SAP apart from BDC and HR_INFOTYPE_Operation.

If these are the only methods then which one is the best and less time consuming.

Plz help

Abaper