>a) Floating '$' directly to the left of the value
>b) Surrounded by parentheses if negative
>c) No space between the '$' and the left parenthesis when number of digits is less than the maximum.
>d) Always a zero to left of point if amount is less than 1 dollar.
>e) Commas at every third digit.
>f) In this case, a maximum of 6 numeral digits to the left of the point.
>
>The following two things yeild the same result and don't work
>
>TRANSFORM(myval,"@($$$$,$$9.99")
>
>TRANSFORM(myval,"@(@T$$$$,$$9.99")
>
>Both of the above put space between the $ and ( and neither prints commas at all??

Try some of these:
?tran(-123.45, "@($ **,**9.99")
?tran(-123.45, "@( **,**9.99")
?tran(-123.45, "@( $**,**9.99")

Note the space between the function and picture clauses. You may want to replace the asterisks with something else or nothing, using CHRT() around this.