Might I ask why do you need all that?
Floppy: Transfer the floppy to a USB key using an old computer
COM: COM to USB converter (No need for PCI)
IDE: Why?
But if I only refer to your original post, just get the COM to USB converter with that mobo you found and it's done!
Vista 64-Bit Compatible 12 inch FTDI CHIP DB-9 Serial Adapter High Speed USB SERIAL RS-232 USBG-RS232-F12 LOW PRICE $11.14
Thanks.