quickbooks and customer manager software

hi i was wondering if anyone can help me out here.

My business is a small business and we employ 4 people who all require a PC and access to customer information. We currently use Cumstomer manage v1 (the only version available in the UK) which worked fine untill we upgraded 2 of the computer and these are now running vista. Customer manager V1 is very buggy and data is becomming currupt and lost. so my question is...........

WHAT CUSTOMER MANAGER SOFTWARE IS THERE AVAILABLE??

i would like something like the quickbook Intuit software as we love the way we can add notes, information, reminders etc to our customers and link with quickbooks for financial information.

Anyhelp would be great, but cost is at a premium as we dont have a large buget to spend hence we got customer manager in the first place as we can paymonthly with barcley business manager.

I Googled "open source customer management software" and got quite a few leads.

If you want to use ZenCart with a customer management software like Quickbook, than you will need to get Quickbook. I don't think anyone has developed a link for ZenCart using any other software. It will save you time which of course that's also money.

There is a quickbooks plugin for zencart other then whats in the downloads for free which is no longer supported, please pm me for details.

question was not to do with zencart actually, hence i posted in the pub as its the free talk section.

the customer manager section is more to keep track of my suppliers and other companies we deal with and also found telemarketing and bill chasing