@Cactus Music & @daveny5: Thank you for your replies :)
The desktop I'm using now is running Windows XP and runs well enough for the moment - I've had Sonar itself running on it perfectly fine before, with an M-Audio Audiophile 2496, so that wasn't another USB interface. I needed to use an ASIO4ALL driver with that, otherwise it would not run. I don't know why. Anyway, I ran it through a mixer, and the setup was too messy for me, plus the recording volume was too low and no amount of fiddling made it better, while other sound playback on my computer suddenly became hard to manage with conflicting volume controls, most useless, a few ultra-sensitive. I just wanted a simple set-up, hence I got a USB interface.
The one my desktop can't do at the moment is use it's CD-ROM drive, so I thought maybe when I just lifted the driver from the CD that came with the CI1 on the laptop and then moved it onto the desktop, that I hadn't got a right installation. A friend got in touch with the Customer Support and on his PC he could download their latest driver. I've got that now, but Sonar gives the same error.
I've disabled the M-Audio card, but it doesn't help.
Sonar gives this error on startup:
"Audio Driver Error
The following driver(S) either do not support the current audio format, or are in use by another application.
Please choose whether you want to disable them or use them anyway"
I click to use it and in my project I can select it as output, but not input. It's listed, but is lacking a Left / Right assignment. I don't know how to explain it properly, but basically under Input for each track is this CI1 and clicking it should open up a menu with the inputs, it has the arrowhead icon next to it. But nothing is filled in.
So, in essence Sonar 5 is still not recognizing the card correctly, and it is not due to the driver being old or upgradeable anyway, or the M-Audio card causing issues, as it's disabled (and I was assured in the shop I would not need to do that actually). Additionally, ASIO4ALL has been removed, as was the old driver I got from the CI1 disc (via the laptop).
I've cleaned up and checked my PC as much as I can, and apart from the CD-ROM issue everything is working OK now.
A very simple reason that I am not going to move to a new OS, Computer, Recording Software, or indeed a mac, as most people tend to advise me to: I can't afford it, and I don't even think it needs to happen that way. The CI1 uses a USB connection. Certainly USB interfaces were around when Sonar 5 came out? Not this one, but still. XP was out. Incidnetally, Vista ran Sonar 5 for me, and Vista is a piece of ¤%"¤# in my book :D 7 might be better, but I haven't got that on my own PC.
Anyway, I was just wondering if anyone knew how I could tweak Sonar, but it's looking pretty grim. Upgrading anything, incidentally, has never solved any issues for me :| I recorded perfectly on a tiny sound card, with a desktop mic, Sonar 3, and Windows 98 - that was only a few years ago. Unfortunately the harddisc was damaged, and since then I've been upgrading this and that and the next thing, but it never works.