Rangers boss Walter Smith has hinted at personnel changes in Thursday's meeting with PSV Eindhoven at Ibrox.But the veteran manager has also suggested that he will continue to adopt the 5-4-1 formation he has employed in Europe this season. [LNB]"Although we kept a similar formation, we have approached the home games in a different fashion," said Smith. [LNB]"We had more attacking personnel within the same set-up. We have to find the right balance." [LNB]PSV travel to Glasgow having drawn 0-0 with Smith's men in the Netherlands last week. [LNB]Having the first leg away from home was a break from what Rangers had been used to in Smith's second spell in charge at Ibrox, the last such occurence taking place in 2007. [LNB]Playing at home first has generally worked in Rangers' favour in recent years and Smith knows, on this occasion, PSV need only a score draw to progress on away goals. [LNB]"We have taken advantage of it in European games ourselves," said Smith.[LNB] When we play the five and the four in midfield we have a lot of pace in the team and can break forward Richard Foster "It's something you have to handle. We have used it to our advantage, the experience we have of that can be gained the other way. [LNB]"But we know at some stage in the game we have to attack and try to win the game. [LNB]"We'll have to change a little bit from the way we have played, especially in the away games. [LNB]"It's that switch that's the main thing. In the last game we had Steven Naismith, Kyle Lafferty and Nikola Jelavic, nearly all the forward-type players, unavailable. [LNB]"We have got one or two of them back available so we are able to field more attacking players even though the formation might be the same." [LNB]Richard Foster was deployed in a wing-back role in Eindhoven and feels the 5-4-1 system has its advantages. [LNB]"The formation we play is quite defensive on paper but, if we're good enough on the ball and see the passes that are there, there are options to break forward quickly," said the on-loan Aberdeen player. [LNB]"When we play the five and the four in midfield we have a lot of pace in the team and can break forward. [LNB]"I think in the Valencia game especially we showed that, so I don't see why playing the same formation we can't be just as attacking.[LNB] [LNB][LNB]We'll open up against PSV - Smith[LNB]"It's actually a good position because there are always three players behind us. [LNB]"Obviously you don't want to be gung-ho and go forward all the time, but if you do go forward you know you have the likes of David Weir and Madjid Bougherra behind you to mop up any mistakes." [LNB]Smith warned his players following the first leg that PSV may pose more of a danger away from home than they did at the Philips Stadion and the Dutch side won all three of their away games in the group stages of this season's Europa League. [LNB]"You always have to take the opposition into account, the opposition being ourselves in that case," added Smith. [LNB]"We have been very difficult to break down away from home. [LNB]"Quite a number of teams have found it difficult to get goals against us when we use that formation. [LNB]"It has been an awkward one to overcome and they found it awkward. [LNB]"It doesn't always give them an opportunity to show just how good they are in terms of attacking. [LNB]"Tomorrow night we'll give them an opportunity, we will have to open up and we'll see how they are. [LNB]"But I think they have very good players and we have to be careful how we set out."