Sorry for the delayed time, it took me a little to be able to figure out how to use every digit to get every number, but I did it, and that was a lot of thinking (jeez my brain hurts now)...
Hope this helps...
GIVEN: 20 = 2+3+7+8
21 = 7*((8-3)-2)
22 = ((8+7-3)*2)-2
23 = ((8*(7-2))+3)/2
24 = (((8*((7/2)+3))/2)-3
25 = ((8*7)/2)-3
26 = (((8+(2-3))*7)-3)-((7+3)*2)
27 = (((8+(2-3))*7)-2)-((7+3)*2)
28 = (((8+(2-3))*7)+(2-3))-((7+3)*2)
29 = ((8+(2-3))*7)-((7+3)*2)
30 = (8*(7-3))-2
31 = (8*(3+2))-(7+2)
32 = (8*(3+2))-(7-(2-3))
33 = (8*(3+2))-7
34 = (8*(3+2))-(7+(2-3))
35 = (8*(3+2))-(7-2)
36 = (8*(3+2))-(7-3)
37 = (8*(3+2))-(7-(2+2))
38 = (8*(3+2))-(7-(2+3))
39 = (8*(3+2))-(7-(3+3))
40 = (8*7)-((7+3)+(2*3))
41 = (8*7)-((7+3)+(2+3))
42 = (8*7)-((7+3)+(2+2))
43 = (8*7)-((7+3)+(2*3)-3)
44 = (8*7)-((7+3)+2)
45 = (8*7)-((7+3)+(3-2))
46 = (8*7)-((3*2)+(2*2))
47 = (8*7)-((3*2)+3)
48 = (8*7)-((7+(3-2))
49 = (8*7)-((2*2)+3)
50 = 2*3*7+8
