Help!! Black 2 White 2 trading

I needed help regarding trade between Black2 and White2 rom...So my question is, how could i possibly trade between two roms on the same desktop? i am using desMuMe , was willing to transfer my shiny gible and tornadus to white rom.
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any help please..?

Normally you can with nosgba but i guess he doesn't support the rom so i will do some research for you okay?