I need help solving this circuit. I don't know where to start in regards to finding the total resistance. Is r4 in series with r5? Circuit is below:

i96.photobucket.com/albums/l169/choicedelight/Circuit_3.png

R1 and R3 are in parallel , and are in series with R2

... full source voltage is across this array

R4 has the full source voltage across it ... due to the diagonal "shorting wire"
... this wire also "shorts" R5, leaving it with no effect on the circuit