Ok now when i used only
addnode=node.gridcoin.us ONLY
i was able to sync but only with my 4th winxp computer
But this should be enough to exchange two wallets i have (i will copy wallet.dat to the client that is working)
Now when i try to use this page:
http://pool.gridcoin.us/CoinExchange.aspx
I did everything correctly and got green message but  then when i send 73.0339 grc from old classic wallet
it says "insufficient funds"
That is my second wallet thas only has the fraction of grc ,so is there a minimum i can exchange?
Also i thought it would be a good thing for testing purposes to firstly exchange only a small amount.

EDIT
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O yeah i cant send the very last digit, probably due to the transaction cost (did that same mistake few months back)