The official system requirements are in the Recorder 6 installation guides which can be accessed via the NBN Forum - see http://forums.nbn.org.uk/viewtopic.php?pid=2013#p2013 - although Charles' recommendations are definitely worth noting.
For a standalone installation they are:
The following guidelines illustrate the specification of machines that will give reasonable performance in Recorder 6. It is possible to use lower specification machines although the performance is reduced. Using less than 256 MB RAM on a machine running MSDE provides very poor performance in most cases.
Processor Intel Pentium 3 processor or later, 800 MHz minimum
Memory 512 MB RAM
Hard disk 3 GB disk space minimum (10 GB recommended)
Software Windows 98 (SP1) or later; Internet Explorer 5 or later
Note that when running Recorder 6 on an old laptop with 256 MB RAM some processes were found to take over twice as long as on a desktop with 512 MB RAM, so the more RAM the better.
If you want to install the current version of Recorder 6 (v6.13) with Vista, instructions are available from http://www.lfield.co.uk/page7a.html . The v6.13 CD will install MSDE (the free run-time version of SQL Server 2000), if required. The next version, v6.14 due out next month, will install SQL Server Express (the free run-time version of SQL Server 2005), if required. The v6.14 DVDs will also install more effectively with Vista.
Sally Rankin, JNCC Recorder Approved Expert
E-mail: s.rankin@btinternet.com
Telephone: 01491 578633
Mobile: 07941 207687