How to handle image field of SQlserver 6.5 in D3

I have manged to use TBolbfield in Interbase but don't know the way to
handle it in Sql server 6.5?
I figured out that D3 assigns TVarbytesfield for Image type field of SQL
Server 6.5 rather TBlobfield.
Can any body give me a way to retrieve/store pictures in sql server
table using D3?