How to use 2sls in eviews 7

[riechan]

dear all..

I need ur help..

I got this equation

:equation: LEV = β10 +β11 DM +β12 MB+β13 SIZE +β14 FAE + β15 NDTS + є1
:equation: DM = β20 +β21 LEV +β12 MB+β13 SIZE +β14 FAE + β15 ASMAT + є1

so, in box spesification, what should I type??
and what should I type in instrument??

thanks.. ur comment will help me to do my disertation. thanks ^^