1)The easy one is to create 2 items. One - T-shirt without custom text, another - with. These items will have different price values.

For the item with text, you would have to enable "Type of option" as "Text field". A text field will apper in the catalog for that item.

2) More complicated solution, is to create one item in the database for T-shirt and another called something like "custom text". "Custom text" item will have price value of $4 and will have "Type of option" set as "Text field". You would need to save custom add to cart html code for that "custom text" item within the text field for T-shirt item.

If you think you want to go with 2nd solution, e-mail to our support and our tech will help you to generate that custom HTML code.

Regards,

>I need top add a text box as a product option so that if
>someone types
>something in the text box it adds an additional fee of 4.00
>to the purchase.
>if it is left blank then no additional amount is added.
>
>We sell shirts and the box is for a name and number to be
>added to the shirt so if some adds the name and number they
>want in
>the box it is added to the cart as a product option (like
>the option 1 in admin) and also adds a
>pre specified amount to the total
>
>Thank you in advance, great bit of software