After asking a similar question on this forum. I purchased an adaptec AFW-4300 DV+ from Amazon. The PCI IEEE 1394 Fire wire card is simple to install and the software (Sonic Mydvd) is a doddle to use. The quality of my last holiday film is great when recorded on to DVD. Price was £53 ish including delivery.
iLink is the same as firewire and IEE1394 which is the method you will use for transfering video to the PC.
Is the TRV33E DV in enabled? That is, does the firewire port operate in both directions allowing you to send your finished masterpiece back to tape? If so, you have the option of storing the edited film on tape, or, as bremner suggests, you can use DVD.
I use Pinnacle Studio 8 to transfer and edit video. I have seen reports that some people had troubles with the software, particularly the first releases. However, I find the simple things I do (transfer, edit, add titles etc) work fine.
You will need a firewire port on your PC. Some people recommend a separate hard drive for video editing but you could try on the single drive and see how you get on.