ah this wasn't part of the replace to fix it, its simply an upgrade I was looking at from the get go. I brought a cheap pci card to see if its the lpt port causing issues, just need to configure it properly and then I should be able to use the machine.
UC300 wont suit my requirements as it offers too much than what I will use it for but from £20 more from the UC100 I might as well get the UC400.