A Solana wallet like https://solana.tor.us/. You will need some SOL tokens to cover transaction fees. You can send some SOL from your SwissBorg application to your Solana wallet.
Use the XBorg Bridge to transfer your tokens from Arbitrum to Solana. You can check our tutorial explaining how to bridge tokens between two wallets.
Once your XBG tokens are on your Solana wallet, you can then deposit the XBG tokens to your SwissBorg account. To do that, open your SwissBorg app, click on XBG > Deposit. Copy your XBG Deposit Address, and send the tokens from your Solana wallet (as shared above, you will need some SOL tokens to cover the transaction fee).