Hi Kranthi,
If you install SAP Netweaver 7.40, add-on SAP_GWFND 740 for core components which comprises functional scope of IW_FND, GW_CORE, IW_BEP, and IW_HDB is available as standard, so with 7.40 netweaver no need to install any other add-ons, for further information, installation guide mentioned above will have all the details.
regards
kartik