not at all. they are two different games.
register on the site, and in your game click the upload icon when that sim is selected - enter your username and pass and upload
Go to the Sims2.ea.com you can upload items for money or items made from other players.
go to http://www.sims2.com then click on 'exchange' then 'sims' and u can download loads of cool sims, cars, pets, clothes etc.
You should use the official sims 2 exchange website.
The stories you upload shouldn't disappear when uploaded. Perhaps there is something else you're doing wrong. You could probably contact the people of the Sims 2 website and tell them about your problem if it really is bothering you.
You can get new maternity clothes for Sims 2 by downloading Squinges mod; pregnant Sims wear any outfit.
The Sims 2 bodyshop is a place where you can make custom sims and clothes for them.
sims exchange
If want baby clothes you have to get them from places like Mod the Sims.
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sims 2 exchange, TSR, rosesims, mod the sims!
There is no cheat to get baby clothes you have to download them from places like Mod the Sims.